mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 07:17:45 -04:00
mcd, preparations for msu support
This commit is contained in:
kub
parent
178a9b683c
commit
02ff025479
15 changed files with 153 additions and 170 deletions
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@ -49,6 +49,7 @@ static int handle_mp3(const char *fname, int index)
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return -1;
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}
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track->type = CT_AUDIO;
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track->fd = tmp_file;
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track->offset = 0;
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@ -114,10 +115,11 @@ int load_cd_image(const char *cd_img_name, int *type)
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}
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tracks[0].fd = pmf;
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tracks[0].fname = strdup(cd_img_name);
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tracks[0].type = *type & CT_AUDIO;
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if (*type == CT_ISO)
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cd_img_sectors = pmf->size >>= 11; // size in sectors
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else cd_img_sectors = pmf->size /= 2352;
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cd_img_sectors = pmf->size >> 11; // size in sectors
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else cd_img_sectors = pmf->size / 2352;
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// cdd.c operates with lba - 150
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tracks[0].start = 0;
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@ -125,8 +127,8 @@ int load_cd_image(const char *cd_img_name, int *type)
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tracks[0].offset = 0;
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sprintf_lba(tmp_ext, sizeof(tmp_ext), 0);
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elprintf(EL_STATUS, "Track 1: %s %9i DATA %s",
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tmp_ext, tracks[0].end, cd_img_name);
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elprintf(EL_STATUS, "Track 1: %s %9i %s %s",
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tmp_ext, tracks[0].end, tracks[0].type ? "AUDIO" : "DATA ", cd_img_name);
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lba = cd_img_sectors;
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@ -185,13 +187,15 @@ int load_cd_image(const char *cd_img_name, int *type)
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length = cue_data->tracks[n].sector_xlength;
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Pico_mcd->cdda_type = cue_data->tracks[n].type;
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tracks[index].type = cue_data->tracks[n].type & CT_AUDIO;
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tracks[index].start = lba;
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lba += length;
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tracks[index].end = lba;
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sprintf_lba(tmp_ext, sizeof(tmp_ext), tracks[index].start);
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elprintf(EL_STATUS, "Track %2i: %s %9i AUDIO %s", n, tmp_ext, length,
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elprintf(EL_STATUS, "Track %2i: %s %9i %s %s", n, tmp_ext, length,
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tracks[index].type ? "AUDIO" : "DATA ",
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cue_data->tracks[n].fname ? cue_data->tracks[n].fname : "");
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}
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goto finish;
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@ -246,6 +250,7 @@ int load_cd_image(const char *cd_img_name, int *type)
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tracks[index].end = lba;
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Pico_mcd->cdda_type = CT_MP3;
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tracks[index].type = CT_AUDIO;
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sprintf_lba(tmp_ext, sizeof(tmp_ext), tracks[index].start);
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elprintf(EL_STATUS, "Track %2i: %s %9i AUDIO - %s",
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@ -172,19 +172,15 @@ cd_data_t *chd_parse(const char *fname)
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}
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memset(&data->tracks[count], 0, sizeof(data->tracks[0]));
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if (count == 1) { // binary code
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data->tracks[count].fname = strdup(fname);
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if (!strcmp(type, "MODE1_RAW") || !strcmp(type, "MODE2_RAW")) {
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data->tracks[count].type = CT_BIN;
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} else if (!strcmp(type, "MODE1") || !strcmp(type, "MODE2_FORM1")) {
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data->tracks[count].type = CT_ISO;
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} else
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break;
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} else { // audio
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if (strcmp(type, "AUDIO"))
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break;
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data->tracks[count].fname = strdup(fname);
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if (!strcmp(type, "MODE1_RAW") || !strcmp(type, "MODE2_RAW")) {
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data->tracks[count].type = CT_BIN;
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} else if (!strcmp(type, "MODE1") || !strcmp(type, "MODE2_FORM1")) {
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data->tracks[count].type = CT_ISO;
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} else if (!strcmp(type, "AUDIO")) {
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data->tracks[count].type = CT_CHD;
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}
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} else
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break;
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data->tracks[count].pregap = pregap;
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if (pgtype[0] != 'V') // VAUDIO includes pregap in file
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@ -344,17 +340,22 @@ file_ok:
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else if (strcasecmp(ext, "wav") == 0)
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data->tracks[count].type = CT_WAV;
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else if (strcasecmp(ext, "bin") == 0)
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data->tracks[count].type = CT_BIN;
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data->tracks[count].type = CT_RAW;
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else {
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elprintf(EL_STATUS, "unhandled audio format: \"%s\"",
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data->tracks[count].fname);
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}
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}
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else
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else if (data->tracks[count-1].type & CT_AUDIO)
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{
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// propagate previous
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data->tracks[count].type = data->tracks[count-1].type;
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}
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else
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{
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// assume raw binary data
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data->tracks[count].type = CT_RAW;
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}
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}
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else {
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elprintf(EL_STATUS, "unhandled track type: \"%s\"", buff2);
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@ -704,7 +704,6 @@ void cdc_reg_w(unsigned char data)
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case 0x0f: /* RESET */
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cdc_reset();
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Pico_mcd->s68k_regs[0x04+1] = 0x10;
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break;
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default: /* by default, SBOUT is not used */
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@ -715,7 +714,7 @@ void cdc_reg_w(unsigned char data)
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unsigned char cdc_reg_r(void)
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{
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switch (Pico_mcd->s68k_regs[0x04+1] & 0x01F)
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switch (Pico_mcd->s68k_regs[0x04+1] & 0x1F)
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{
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case 0x00:
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return 0xff;
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@ -835,7 +834,9 @@ unsigned short cdc_host_r(void)
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/* clear DSR bit & set EDT bit (SCD register $04) */
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Pico_mcd->s68k_regs[0x04+0] = (Pico_mcd->s68k_regs[0x04+0] & 0x07) | 0x80;
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} else if ((int16)cdc.dbc <= 2) {
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} else if ((int16)cdc.dbc <= 2)
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{
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if (cdc.ifstat & BIT_DTEI) {
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/* pending Data Transfer End interrupt */
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cdc.ifstat &= ~BIT_DTEI;
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@ -49,6 +49,9 @@
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cdd_t cdd;
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#define is_audio(index) \
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(cdd.toc.tracks[index].type & CT_AUDIO)
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/* BCD conversion lookup tables */
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static const uint8 lut_BCD_8[100] =
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{
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@ -239,12 +242,12 @@ int cdd_context_load(uint8 *state)
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}
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/* seek to current track position */
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if (!cdd.index)
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if (!is_audio(cdd.index))
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{
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/* DATA track */
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if (cdd.toc.tracks[0].fd)
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if (cdd.toc.tracks[cdd.index].fd)
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{
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pm_seek(cdd.toc.tracks[0].fd, lba * cdd.sectorSize, SEEK_SET);
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pm_seek(cdd.toc.tracks[cdd.index].fd, lba * cdd.sectorSize, SEEK_SET);
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}
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}
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#ifdef USE_LIBTREMOR
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@ -318,7 +321,7 @@ int cdd_load(const char *filename, int type)
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cdd.sectorSize = 2048;
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}
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ret = (type == CT_BIN) ? 2352 : 2048;
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ret = (type == CT_ISO ? 2048 : 2352);
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if (ret != cdd.sectorSize)
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elprintf(EL_STATUS|EL_ANOMALY, "cd: type detection mismatch");
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pm_sectorsize(cdd.sectorSize, cdd.toc.tracks[0].fd);
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@ -507,17 +510,17 @@ int cdd_unload(void)
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void cdd_read_data(uint8 *dst)
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{
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/* only read DATA track sectors */
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if ((cdd.lba >= 0) && (cdd.lba < cdd.toc.tracks[0].end))
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if ((cdd.lba >= 0) && (cdd.lba < cdd.toc.tracks[cdd.index].end))
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{
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/* BIN format ? */
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if (cdd.sectorSize == 2352)
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{
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/* skip 16-byte header */
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pm_seek(cdd.toc.tracks[0].fd, cdd.lba * 2352 + 16, SEEK_SET);
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pm_seek(cdd.toc.tracks[cdd.index].fd, cdd.lba * 2352 + 16, SEEK_SET);
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}
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/* read sector data (Mode 1 = 2048 bytes) */
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pm_read(dst, 2048, cdd.toc.tracks[0].fd);
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pm_read(dst, 2048, cdd.toc.tracks[cdd.index].fd);
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}
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}
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@ -698,7 +701,7 @@ void cdd_update(void)
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if (cdd.status == CD_PLAY)
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{
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/* track type */
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if (!cdd.index)
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if (!is_audio(cdd.index))
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{
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/* DATA sector header (CD-ROM Mode 1) */
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uint8 header[4];
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@ -846,13 +849,13 @@ void cdd_update(void)
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}
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/* seek to current block */
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if (!cdd.index)
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if (!is_audio(cdd.index))
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{
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/* no AUDIO track playing */
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Pico_mcd->s68k_regs[0x36+0] = 0x01;
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/* DATA track */
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pm_seek(cdd.toc.tracks[0].fd, cdd.lba * cdd.sectorSize, SEEK_SET);
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pm_seek(cdd.toc.tracks[cdd.index].fd, cdd.lba * cdd.sectorSize, SEEK_SET);
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}
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#ifdef USE_LIBTREMOR
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else if (cdd.toc.tracks[cdd.index].vf.seekable)
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@ -914,7 +917,7 @@ void cdd_process(void)
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set_reg16(0x3a, lut_BCD_16[(lba/75)/60]);
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set_reg16(0x3c, lut_BCD_16[(lba/75)%60]);
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set_reg16(0x3e, lut_BCD_16[(lba%75)]);
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Pico_mcd->s68k_regs[0x40+0] = cdd.index ? 0x00 : 0x04;
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Pico_mcd->s68k_regs[0x40+0] = is_audio(cdd.index) ? 0x00 : 0x04;
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} else if (Pico_mcd->s68k_regs[0x38+1] == 0x02) {
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/* then return valid track infos, e.g current track number in RS2-RS3 (fixes Lunar - The Silver Star) */
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Pico_mcd->s68k_regs[0x38+1] = 0x02;
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@ -957,7 +960,7 @@ void cdd_process(void)
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set_reg16(0x3a, lut_BCD_16[(lba/75)/60]);
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set_reg16(0x3c, lut_BCD_16[(lba/75)%60]);
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set_reg16(0x3e, lut_BCD_16[(lba%75)]);
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Pico_mcd->s68k_regs[0x40+0] = cdd.index ? 0x00 : 0x04; /* Current block flags in RS8 (bit0 = mute status, bit1: pre-emphasis status, bit2: track type) */
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Pico_mcd->s68k_regs[0x40+0] = is_audio(cdd.index) ? 0x00 : 0x04; /* Current block flags in RS8 (bit0 = mute status, bit1: pre-emphasis status, bit2: track type) */
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break;
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}
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@ -969,7 +972,7 @@ void cdd_process(void)
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set_reg16(0x3a, lut_BCD_16[(lba/75)/60]);
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set_reg16(0x3c, lut_BCD_16[(lba/75)%60]);
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set_reg16(0x3e, lut_BCD_16[(lba%75)]);
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Pico_mcd->s68k_regs[0x40+0] = cdd.index ? 0x00 : 0x04; /* Current block flags in RS8 (bit0 = mute status, bit1: pre-emphasis status, bit2: track type) */
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Pico_mcd->s68k_regs[0x40+0] = is_audio(cdd.index) ? 0x00 : 0x04; /* Current block flags in RS8 (bit0 = mute status, bit1: pre-emphasis status, bit2: track type) */
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break;
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}
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@ -1113,10 +1116,10 @@ void cdd_process(void)
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}
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/* seek to current block */
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if (!index)
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if (!is_audio(cdd.index))
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{
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/* DATA track */
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pm_seek(cdd.toc.tracks[0].fd, lba * cdd.sectorSize, SEEK_SET);
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pm_seek(cdd.toc.tracks[cdd.index].fd, lba * cdd.sectorSize, SEEK_SET);
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}
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#ifdef USE_LIBTREMOR
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else if (cdd.toc.tracks[index].vf.seekable)
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@ -1212,10 +1215,10 @@ void cdd_process(void)
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}
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/* seek to current block */
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if (!index)
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if (!is_audio(cdd.index))
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{
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/* DATA track */
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pm_seek(cdd.toc.tracks[0].fd, lba * cdd.sectorSize, SEEK_SET);
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pm_seek(cdd.toc.tracks[cdd.index].fd, lba * cdd.sectorSize, SEEK_SET);
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}
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#ifdef USE_LIBTREMOR
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else if (cdd.toc.tracks[index].vf.seekable)
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@ -60,6 +60,7 @@
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/* CD track */
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typedef struct
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{
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int type;
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char *fname;
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void *fd;
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#ifdef USE_LIBTREMOR
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@ -16,6 +16,7 @@ static unsigned int mcd_s68k_cycle_mult;
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static unsigned int mcd_m68k_cycle_base;
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static unsigned int mcd_s68k_cycle_base;
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mcd_state *Pico_mcd;
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PICO_INTERNAL void PicoInitMCD(void)
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{
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@ -25,6 +26,10 @@ PICO_INTERNAL void PicoInitMCD(void)
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PICO_INTERNAL void PicoExitMCD(void)
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{
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cdd_unload();
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if (Pico_mcd) {
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plat_munmap(Pico_mcd, sizeof(mcd_state));
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Pico_mcd = NULL;
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}
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}
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PICO_INTERNAL void PicoPowerMCD(void)
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@ -52,7 +57,8 @@ PICO_INTERNAL void PicoPowerMCD(void)
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Pico_mcd->m.state_flags = PCD_ST_S68K_RST;
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Pico_mcd->m.busreq = 2; // busreq on, s68k in reset
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Pico_mcd->s68k_regs[3] = 1; // 2M word RAM mode, m68k access
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memset(Pico_mcd->bios + 0x70, 0xff, 4);
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if (Pico.romsize <= 0x20000)
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memset(Pico.rom + 0x70, 0xff, 4);
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}
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void pcd_soft_reset(void)
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113
pico/cd/memory.c
113
pico/cd/memory.c
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@ -23,6 +23,9 @@ MAKE_68K_WRITE16(s68k_write16, s68k_write16_map)
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MAKE_68K_WRITE32(s68k_write32, s68k_write16_map)
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#endif
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u32 pcd_base_address;
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#define BASE pcd_base_address
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// -----------------------------------------------------------------
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// provided by ASM code:
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@ -113,7 +116,7 @@ static u32 m68k_reg_read16(u32 a)
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d = Pico_mcd->s68k_regs[4]<<8;
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goto end;
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case 6:
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d = *(u16 *)(Pico_mcd->bios + 0x72);
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d = *(u16 *)(Pico.rom + 0x72);
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goto end;
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case 8:
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d = cdc_host_r();
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@ -169,8 +172,8 @@ void m68k_reg_write8(u32 a, u32 d)
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case 1:
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d &= 3;
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dold = Pico_mcd->m.busreq;
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if (!(d & 1))
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d |= 2; // verified: can't release bus on reset
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// if (!(d & 1))
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// d |= 2; // verified: can't release bus on reset
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if (dold == d)
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return;
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@ -185,7 +188,7 @@ void m68k_reg_write8(u32 a, u32 d)
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elprintf(EL_CDREGS, "m68k: resetting s68k");
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SekResetS68k();
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}
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if ((dold ^ d) & 2) {
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if (((dold & 3) == 1) != ((d & 3) == 1)) {
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elprintf(EL_INTSW, "m68k: s68k brq %i", d >> 1);
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remap_prg_window(d, Pico_mcd->s68k_regs[3]);
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}
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@ -218,12 +221,12 @@ void m68k_reg_write8(u32 a, u32 d)
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remap_word_ram(d);
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goto write_comm;
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case 6:
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Pico_mcd->bios[MEM_BE2(0x72)] = d; // simple hint vector changer
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Pico.rom[MEM_BE2(0x72)] = d; // simple hint vector changer
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return;
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case 7:
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Pico_mcd->bios[MEM_BE2(0x73)] = d;
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Pico.rom[MEM_BE2(0x73)] = d;
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elprintf(EL_CDREGS, "hint vector set to %04x%04x",
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((u16 *)Pico_mcd->bios)[0x70/2], ((u16 *)Pico_mcd->bios)[0x72/2]);
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((u16 *)Pico.rom)[0x70/2], ((u16 *)Pico.rom)[0x72/2]);
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return;
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case 8:
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(void) cdc_host_r(); // acts same as reading
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@ -659,7 +662,7 @@ static void PicoWriteM68k16_cell1(u32 a, u32 d)
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}
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#endif
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// RAM cart (40000 - 7fffff, optional)
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// RAM cart (400000 - 7fffff, optional)
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static u32 PicoReadM68k8_ramc(u32 a)
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{
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u32 d = 0;
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|
|
@ -685,6 +688,8 @@ static u32 PicoReadM68k8_ramc(u32 a)
|
|||
static u32 PicoReadM68k16_ramc(u32 a)
|
||||
{
|
||||
elprintf(EL_ANOMALY, "ramcart r16: [%06x] @%06x", a, SekPcS68k);
|
||||
if ((a & 0xfffffc) == BASE+0x100) // CD detection by MSU
|
||||
return (~a & 2) ? 0x5345 : 0x4741; // "SEGA"
|
||||
return PicoReadM68k8_ramc(a + 1);
|
||||
}
|
||||
|
||||
|
|
@ -1093,13 +1098,12 @@ static const void *s68k_dec_write16[2][4] = {
|
|||
|
||||
static void remap_prg_window(u32 r1, u32 r3)
|
||||
{
|
||||
// PRG RAM
|
||||
if (r1 & 2) {
|
||||
// PRG RAM, mapped to main CPU if sub is not running
|
||||
if ((r1 & 3) != 1) {
|
||||
void *bank = Pico_mcd->prg_ram_b[(r3 >> 6) & 3];
|
||||
cpu68k_map_all_ram(0x020000, 0x03ffff, bank, 0);
|
||||
}
|
||||
else {
|
||||
m68k_map_unmap(0x020000, 0x03ffff);
|
||||
cpu68k_map_all_ram(BASE+0x020000, BASE+0x03ffff, bank, 0);
|
||||
} else {
|
||||
m68k_map_unmap(BASE+0x020000, BASE+0x03ffff);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -1145,14 +1149,14 @@ static void remap_word_ram(u32 r3)
|
|||
// 2M mode.
|
||||
bank = Pico_mcd->word_ram2M;
|
||||
if (r3 & 1) {
|
||||
cpu68k_map_all_ram(0x200000, 0x23ffff, bank, 0);
|
||||
cpu68k_map_all_ram(BASE+0x200000, BASE+0x23ffff, bank, 0);
|
||||
cpu68k_map_all_funcs(0x80000, 0xbffff,
|
||||
s68k_wordram_main_read8, s68k_wordram_main_read16,
|
||||
s68k_wordram_main_write8, s68k_wordram_main_write16, 1);
|
||||
} else {
|
||||
Pico_mcd->m.state_flags &= ~PCD_ST_S68K_SLEEP;
|
||||
cpu68k_map_all_ram(0x080000, 0x0bffff, bank, 1);
|
||||
m68k_map_unmap(0x200000, 0x23ffff);
|
||||
m68k_map_unmap(BASE+0x200000, BASE+0x23ffff);
|
||||
}
|
||||
// TODO: handle 0x0c0000
|
||||
}
|
||||
|
|
@ -1161,11 +1165,11 @@ static void remap_word_ram(u32 r3)
|
|||
int m = (r3 & 0x18) >> 3;
|
||||
Pico_mcd->m.state_flags &= ~PCD_ST_S68K_SLEEP;
|
||||
bank = Pico_mcd->word_ram1M[b0];
|
||||
cpu68k_map_all_ram(0x200000, 0x21ffff, bank, 0);
|
||||
cpu68k_map_all_ram(BASE+0x200000, BASE+0x21ffff, bank, 0);
|
||||
bank = Pico_mcd->word_ram1M[b0 ^ 1];
|
||||
cpu68k_map_all_ram(0x0c0000, 0x0effff, bank, 1);
|
||||
// "cell arrange" on m68k
|
||||
cpu68k_map_all_funcs(0x220000, 0x23ffff,
|
||||
cpu68k_map_all_funcs(BASE+0x220000, BASE+0x23ffff,
|
||||
m68k_cell_read8[b0], m68k_cell_read16[b0],
|
||||
m68k_cell_write8[b0], m68k_cell_write16[b0], 0);
|
||||
// "decode format" on s68k
|
||||
|
|
@ -1187,7 +1191,7 @@ void pcd_state_loaded_mem(void)
|
|||
Pico_mcd->m.dmna_ret_2m &= 3;
|
||||
|
||||
// restore hint vector
|
||||
*(u16 *)(Pico_mcd->bios + 0x72) = Pico_mcd->m.hint_vector;
|
||||
*(u16 *)(Pico.rom + 0x72) = Pico_mcd->m.hint_vector;
|
||||
}
|
||||
|
||||
#ifdef EMU_M68K
|
||||
|
|
@ -1196,6 +1200,10 @@ static void m68k_mem_setup_cd(void);
|
|||
|
||||
PICO_INTERNAL void PicoMemSetupCD(void)
|
||||
{
|
||||
if (!Pico_mcd)
|
||||
Pico_mcd = plat_mmap(0x05000000, sizeof(mcd_state), 0, 0);
|
||||
pcd_base_address = (Pico.romsize > 0x20000 ? 0x400000 : 0x000000);
|
||||
|
||||
// setup default main68k map
|
||||
PicoMemSetup();
|
||||
|
||||
|
|
@ -1215,30 +1223,30 @@ PICO_INTERNAL void PicoMemSetupCD(void)
|
|||
cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_mcd_io, 1);
|
||||
|
||||
// sub68k map
|
||||
cpu68k_map_set(s68k_read8_map, 0x000000, 0xffffff, s68k_unmapped_read8, 1);
|
||||
cpu68k_map_set(s68k_read16_map, 0x000000, 0xffffff, s68k_unmapped_read16, 1);
|
||||
cpu68k_map_set(s68k_write8_map, 0x000000, 0xffffff, s68k_unmapped_write8, 1);
|
||||
cpu68k_map_set(s68k_write16_map, 0x000000, 0xffffff, s68k_unmapped_write16, 1);
|
||||
cpu68k_map_set(s68k_read8_map, 0x000000, 0xffffff, s68k_unmapped_read8, 3);
|
||||
cpu68k_map_set(s68k_read16_map, 0x000000, 0xffffff, s68k_unmapped_read16, 3);
|
||||
cpu68k_map_set(s68k_write8_map, 0x000000, 0xffffff, s68k_unmapped_write8, 3);
|
||||
cpu68k_map_set(s68k_write16_map, 0x000000, 0xffffff, s68k_unmapped_write16, 3);
|
||||
|
||||
// PRG RAM
|
||||
cpu68k_map_set(s68k_read8_map, 0x000000, 0x07ffff, Pico_mcd->prg_ram, 0);
|
||||
cpu68k_map_set(s68k_read16_map, 0x000000, 0x07ffff, Pico_mcd->prg_ram, 0);
|
||||
cpu68k_map_set(s68k_write8_map, 0x000000, 0x07ffff, Pico_mcd->prg_ram, 0);
|
||||
cpu68k_map_set(s68k_write16_map, 0x000000, 0x07ffff, Pico_mcd->prg_ram, 0);
|
||||
cpu68k_map_set(s68k_write8_map, 0x000000, 0x01ffff, PicoWriteS68k8_prgwp, 1);
|
||||
cpu68k_map_set(s68k_write16_map, 0x000000, 0x01ffff, PicoWriteS68k16_prgwp, 1);
|
||||
cpu68k_map_set(s68k_read8_map, 0x000000, 0x07ffff, Pico_mcd->prg_ram, 2);
|
||||
cpu68k_map_set(s68k_read16_map, 0x000000, 0x07ffff, Pico_mcd->prg_ram, 2);
|
||||
cpu68k_map_set(s68k_write8_map, 0x000000, 0x07ffff, Pico_mcd->prg_ram, 2);
|
||||
cpu68k_map_set(s68k_write16_map, 0x000000, 0x07ffff, Pico_mcd->prg_ram, 2);
|
||||
cpu68k_map_set(s68k_write8_map, 0x000000, 0x01ffff, PicoWriteS68k8_prgwp, 3);
|
||||
cpu68k_map_set(s68k_write16_map, 0x000000, 0x01ffff, PicoWriteS68k16_prgwp, 3);
|
||||
|
||||
// BRAM
|
||||
cpu68k_map_set(s68k_read8_map, 0xfe0000, 0xfeffff, PicoReadS68k8_bram, 1);
|
||||
cpu68k_map_set(s68k_read16_map, 0xfe0000, 0xfeffff, PicoReadS68k16_bram, 1);
|
||||
cpu68k_map_set(s68k_write8_map, 0xfe0000, 0xfeffff, PicoWriteS68k8_bram, 1);
|
||||
cpu68k_map_set(s68k_write16_map, 0xfe0000, 0xfeffff, PicoWriteS68k16_bram, 1);
|
||||
cpu68k_map_set(s68k_read8_map, 0xfe0000, 0xfeffff, PicoReadS68k8_bram, 3);
|
||||
cpu68k_map_set(s68k_read16_map, 0xfe0000, 0xfeffff, PicoReadS68k16_bram, 3);
|
||||
cpu68k_map_set(s68k_write8_map, 0xfe0000, 0xfeffff, PicoWriteS68k8_bram, 3);
|
||||
cpu68k_map_set(s68k_write16_map, 0xfe0000, 0xfeffff, PicoWriteS68k16_bram, 3);
|
||||
|
||||
// PCM, regs
|
||||
cpu68k_map_set(s68k_read8_map, 0xff0000, 0xffffff, PicoReadS68k8_pr, 1);
|
||||
cpu68k_map_set(s68k_read16_map, 0xff0000, 0xffffff, PicoReadS68k16_pr, 1);
|
||||
cpu68k_map_set(s68k_write8_map, 0xff0000, 0xffffff, PicoWriteS68k8_pr, 1);
|
||||
cpu68k_map_set(s68k_write16_map, 0xff0000, 0xffffff, PicoWriteS68k16_pr, 1);
|
||||
cpu68k_map_set(s68k_read8_map, 0xff0000, 0xffffff, PicoReadS68k8_pr, 3);
|
||||
cpu68k_map_set(s68k_read16_map, 0xff0000, 0xffffff, PicoReadS68k16_pr, 3);
|
||||
cpu68k_map_set(s68k_write8_map, 0xff0000, 0xffffff, PicoWriteS68k8_pr, 3);
|
||||
cpu68k_map_set(s68k_write16_map, 0xff0000, 0xffffff, PicoWriteS68k16_pr, 3);
|
||||
|
||||
// RAMs
|
||||
remap_prg_window(2,1);
|
||||
|
|
@ -1265,37 +1273,6 @@ PICO_INTERNAL void PicoMemSetupCD(void)
|
|||
PicoCpuFS68k.write_byte = (void *)s68k_write8;
|
||||
PicoCpuFS68k.write_word = (void *)s68k_write16;
|
||||
PicoCpuFS68k.write_long = (void *)s68k_write32;
|
||||
|
||||
// setup FAME fetchmap
|
||||
{
|
||||
#if defined __clang__ || defined HW_WUP
|
||||
volatile // prevent strange relocs from clang
|
||||
#endif
|
||||
uptr ptr_ram = (uptr)PicoMem.ram;
|
||||
int i;
|
||||
|
||||
// M68k
|
||||
// by default, point everything to fitst 64k of ROM (BIOS)
|
||||
for (i = 0; i < M68K_FETCHBANK1; i++)
|
||||
PicoCpuFM68k.Fetch[i] = (uptr)Pico.rom - (i<<(24-FAMEC_FETCHBITS));
|
||||
// now real ROM (BIOS)
|
||||
for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < Pico.romsize; i++)
|
||||
PicoCpuFM68k.Fetch[i] = (uptr)Pico.rom;
|
||||
// .. and RAM
|
||||
for (i = M68K_FETCHBANK1*14/16; i < M68K_FETCHBANK1; i++)
|
||||
PicoCpuFM68k.Fetch[i] = ptr_ram - (i<<(24-FAMEC_FETCHBITS));
|
||||
// S68k
|
||||
// PRG RAM is default
|
||||
for (i = 0; i < M68K_FETCHBANK1; i++)
|
||||
PicoCpuFS68k.Fetch[i] = (uptr)Pico_mcd->prg_ram - (i<<(24-FAMEC_FETCHBITS));
|
||||
// real PRG RAM
|
||||
for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < 0x80000; i++)
|
||||
PicoCpuFS68k.Fetch[i] = (uptr)Pico_mcd->prg_ram;
|
||||
// WORD RAM 2M area
|
||||
for (i = M68K_FETCHBANK1*0x08/0x100; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < 0xc0000; i++)
|
||||
PicoCpuFS68k.Fetch[i] = (uptr)Pico_mcd->word_ram2M - 0x80000;
|
||||
// remap_word_ram() will setup word ram for both
|
||||
}
|
||||
#endif
|
||||
#ifdef EMU_M68K
|
||||
m68k_mem_setup_cd();
|
||||
|
|
|
|||
|
|
@ -51,7 +51,7 @@
|
|||
.global PicoWriteS68k16_dec_m2b1
|
||||
|
||||
@ externs, just for reference
|
||||
.extern Pico
|
||||
.extern Pico_mcd
|
||||
.extern cdc_host_r
|
||||
.extern m68k_reg_write8
|
||||
.extern s68k_reg_read16
|
||||
|
|
@ -130,9 +130,9 @@ PicoReadM68k8_cell1: @ 0x220000 - 0x23ffff, cell arranged
|
|||
mov r3, #0x0e0000
|
||||
0:
|
||||
cell_map
|
||||
PIC_LDR(r1, r2, Pico)
|
||||
PIC_LDR(r1, r2, Pico_mcd)
|
||||
add r0, r0, r3
|
||||
ldr r1, [r1, #OFS_Pico_rom] @ Pico.mcd (used everywhere)
|
||||
ldr r1, [r1] @ Pico.mcd (used everywhere)
|
||||
eor r0, r0, #1
|
||||
ldrb r0, [r1, r0]
|
||||
bx lr
|
||||
|
|
@ -143,9 +143,9 @@ PicoRead8_mcd_io:
|
|||
cmp r1, #0x2000 @ a120xx?
|
||||
bne PicoRead8_io
|
||||
|
||||
PIC_LDR(r1, r2, Pico)
|
||||
PIC_LDR(r1, r2, Pico_mcd)
|
||||
and r0, r0, #0x3f
|
||||
ldr r1, [r1, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r1, [r1] @ Pico.mcd
|
||||
cmp r0, #0x0e
|
||||
PIC_XB(lt ,r0, lsl #2)
|
||||
b m_m68k_read8_hi
|
||||
|
|
@ -242,9 +242,9 @@ PicoReadM68k16_cell1: @ 0x220000 - 0x23ffff, cell arranged
|
|||
mov r3, #0x0e0000
|
||||
0:
|
||||
cell_map
|
||||
PIC_LDR(r1, r2, Pico)
|
||||
PIC_LDR(r1, r2, Pico_mcd)
|
||||
add r0, r0, r3
|
||||
ldr r1, [r1, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r1, [r1] @ Pico.mcd
|
||||
bic r0, r0, #1
|
||||
ldrh r0, [r1, r0]
|
||||
bx lr
|
||||
|
|
@ -256,9 +256,9 @@ PicoRead16_mcd_io:
|
|||
bne PicoRead16_io
|
||||
|
||||
m_m68k_read16_m68k_regs:
|
||||
PIC_LDR(r1, r2, Pico)
|
||||
PIC_LDR(r1, r2, Pico_mcd)
|
||||
and r0, r0, #0x3e
|
||||
ldr r1, [r1, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r1, [r1, @ Pico.mcd
|
||||
cmp r0, #0x0e
|
||||
PIC_XB(lt ,r0, lsl #1)
|
||||
b m_m68k_read16_hi
|
||||
|
|
@ -333,9 +333,9 @@ PicoWriteM68k8_cell1: @ 0x220000 - 0x23ffff, cell arranged
|
|||
0:
|
||||
mov r3, r1
|
||||
cell_map
|
||||
PIC_LDR(r2, r1, Pico)
|
||||
PIC_LDR(r2, r1, Pico_mcd)
|
||||
add r0, r0, r12
|
||||
ldr r2, [r2, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r2, [r2] @ Pico.mcd
|
||||
ldr r2, [r2]
|
||||
eor r0, r0, #1
|
||||
strb r3, [r2, r0]
|
||||
|
|
@ -361,9 +361,9 @@ PicoWriteM68k16_cell1: @ 0x220000 - 0x23ffff, cell arranged
|
|||
0:
|
||||
mov r3, r1
|
||||
cell_map
|
||||
PIC_LDR(r1, r2, Pico)
|
||||
PIC_LDR(r1, r2, Pico_mcd)
|
||||
add r0, r0, r12
|
||||
ldr r1, [r1, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r1, [r1] @ Pico.mcd
|
||||
bic r0, r0, #1
|
||||
strh r3, [r1, r0]
|
||||
bx lr
|
||||
|
|
@ -403,9 +403,9 @@ PicoReadS68k8_dec0: @ 0x080000 - 0x0bffff
|
|||
PicoReadS68k8_dec1:
|
||||
mov r3, #0x0a0000 @ + ^ / 2
|
||||
0:
|
||||
PIC_LDR(r2, r1, Pico)
|
||||
PIC_LDR(r2, r1, Pico_mcd)
|
||||
eor r0, r0, #2
|
||||
ldr r2, [r2, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r2, [r2] @ Pico.mcd
|
||||
movs r0, r0, lsr #1 @ +4-6 <<16
|
||||
add r2, r2, r3 @ map to our address
|
||||
ldrb r0, [r2, r0]
|
||||
|
|
@ -435,8 +435,8 @@ m_s68k_read8_regs:
|
|||
bx lr
|
||||
|
||||
m_s68k_read8_comm:
|
||||
PIC_LDR(r1, r2, Pico)
|
||||
ldr r1, [r1, #OFS_Pico_rom] @ Pico.mcd
|
||||
PIC_LDR(r1, r2, Pico_mcd)
|
||||
ldr r1, [r1] @ Pico.mcd
|
||||
add r1, r1, #0x110000
|
||||
ldrb r1, [r1, r0]
|
||||
bic r0, r0, #1
|
||||
|
|
@ -448,9 +448,9 @@ m_s68k_read8_pcm:
|
|||
bne m_read_null
|
||||
|
||||
@ must not trash r3 and r12
|
||||
PIC_LDR(r1, r2, Pico)
|
||||
PIC_LDR(r1, r2, Pico_mcd)
|
||||
bic r0, r0, #0xff0000
|
||||
ldr r1, [r1, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r1, [r1] @ Pico.mcd
|
||||
mov r2, #0x110000
|
||||
orr r2, r2, #0x002200
|
||||
cmp r0, #0x2000
|
||||
|
|
@ -483,9 +483,9 @@ PicoReadS68k16_dec0: @ 0x080000 - 0x0bffff
|
|||
PicoReadS68k16_dec1:
|
||||
mov r3, #0x0a0000 @ + ^ / 2
|
||||
0:
|
||||
PIC_LDR(r2, r1, Pico)
|
||||
PIC_LDR(r2, r1, Pico_mcd)
|
||||
eor r0, r0, #2
|
||||
ldr r2, [r2, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r2, [r2] @ Pico.mcd
|
||||
mov r0, r0, lsr #1 @ +4-6 <<16
|
||||
add r2, r2, r3 @ map to our address
|
||||
ldrb r0, [r2, r0]
|
||||
|
|
@ -513,9 +513,9 @@ m_s68k_read16_regs:
|
|||
|
||||
|
||||
.macro m_s68k_write8_2M_decode
|
||||
PIC_LDR(r2, ip, Pico)
|
||||
PIC_LDR(r2, ip, Pico_mcd)
|
||||
eor r0, r0, #2
|
||||
ldr r2, [r2, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r2, [r2] @ Pico.mcd
|
||||
movs r0, r0, lsr #1 @ +4-6 <<16
|
||||
add r2, r2, r3 @ map to our address
|
||||
.endm
|
||||
|
|
@ -597,9 +597,9 @@ m_s68k_write8_pcm:
|
|||
bxlt lr
|
||||
|
||||
m_s68k_write8_pcm_ram:
|
||||
PIC_LDR(r3, r2, Pico)
|
||||
PIC_LDR(r3, r2, Pico_mcd)
|
||||
bic r0, r0, #0x00e000
|
||||
ldr r3, [r3, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r3, [r3] @ Pico.mcd
|
||||
mov r0, r0, lsr #1
|
||||
add r2, r3, #0x110000
|
||||
add r2, r2, #0x002200
|
||||
|
|
@ -615,9 +615,9 @@ m_s68k_write8_pcm_ram:
|
|||
|
||||
|
||||
.macro m_s68k_write16_2M_decode
|
||||
PIC_LDR(r2, ip, Pico)
|
||||
PIC_LDR(r2, ip, Pico_mcd)
|
||||
eor r0, r0, #2
|
||||
ldr r2, [r2, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r2, [r2] @ Pico.mcd
|
||||
mov r0, r0, lsr #1 @ +4-6 <<16
|
||||
add r2, r2, r3 @ map to our address
|
||||
.endm
|
||||
|
|
@ -696,9 +696,9 @@ m_s68k_write16_regs:
|
|||
bne s68k_reg_write16
|
||||
|
||||
m_s68k_write16_regs_spec: @ special case
|
||||
PIC_LDR(r2, r0, Pico)
|
||||
PIC_LDR(r2, r0, Pico_mcd)
|
||||
mov r0, #0x110000
|
||||
ldr r2, [r2, #OFS_Pico_rom] @ Pico.mcd
|
||||
ldr r2, [r2] @ Pico.mcd
|
||||
add r0, r0, #0x00000f
|
||||
strb r1, [r2, r0] @ if (a == 0xe) s68k_regs[0xf] = d;
|
||||
bx lr
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue