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sms wip: initial graphics support

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@761 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-08-25 16:25:22 +00:00
parent 67e50ff8d9
commit 200772b790
8 changed files with 251 additions and 37 deletions
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27
pico/sms.c
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@ -28,11 +28,11 @@ static void vdp_data_write(unsigned char d)
if (pv->type == 3) {
Pico.cram[pv->addr & 0x1f] = d;
Pico.m.dirtyPal = 1;
} else {
Pico.vramb[pv->addr] = d;
}
pv->addr = (pv->addr + 1) & 0x3fff;
elprintf(EL_ANOMALY, " addr=%04x", pv->addr);
pv->pending = 0;
}
@ -44,7 +44,7 @@ static void vdp_ctl_write(unsigned char d)
if (pv->pending) {
if ((d >> 6) == 2) {
pv->reg[d & 0x0f] = pv->addr;
elprintf(EL_ANOMALY, " VDP r%02x=%02x", d & 0x0f, pv->addr & 0xff);
elprintf(EL_IO, " VDP r%02x=%02x", d & 0x0f, pv->addr & 0xff);
}
pv->type = d >> 6;
pv->addr &= 0x00ff;
@ -60,7 +60,7 @@ static unsigned char z80_sms_in(unsigned short a)
{
unsigned char d = 0;
elprintf(EL_ANOMALY, "z80 port %04x read", a);
elprintf(EL_IO, "z80 port %04x read", a);
a &= 0xc1;
switch (a)
{
@ -95,13 +95,13 @@ static unsigned char z80_sms_in(unsigned short a)
break;
}
elprintf(EL_ANOMALY, "ret = %02x", d);
elprintf(EL_IO, "ret = %02x", d);
return d;
}
static void z80_sms_out(unsigned short a, unsigned char d)
{
elprintf(EL_ANOMALY, "z80 port %04x write %02x", a, d);
elprintf(EL_IO, "z80 port %04x write %02x", a, d);
a &= 0xc1;
switch (a)
{
@ -151,15 +151,9 @@ static void write_bank(unsigned short a, unsigned char d)
}
}
static unsigned char MEMH_FUNC xread(unsigned short a)
{
elprintf(EL_ANOMALY, "z80 read [%04x]", a);
return Pico.zram[a & 0x1fff];
}
static void MEMH_FUNC xwrite(unsigned int a, unsigned char d)
{
elprintf(EL_ANOMALY, "z80 write [%04x] %02x", a, d);
elprintf(EL_IO, "z80 write [%04x] %02x", a, d);
if (a >= 0xc000)
Pico.zram[a & 0x1fff] = d;
if (a >= 0xfff0)
@ -186,7 +180,7 @@ void PicoMemSetupMS(void)
{
z80_map_set(z80_read_map, 0x0000, 0xbfff, Pico.rom, 0);
z80_map_set(z80_read_map, 0xc000, 0xdfff, Pico.zram, 0);
z80_map_set(z80_read_map, 0xe000, 0xffff, xread, 1);
z80_map_set(z80_read_map, 0xe000, 0xffff, Pico.zram, 0);
z80_map_set(z80_write_map, 0x0000, 0xbfff, xwrite, 1);
z80_map_set(z80_write_map, 0xc000, 0xdfff, Pico.zram, 0);
@ -215,11 +209,15 @@ void PicoFrameMS(void)
int lines_vis = 192;
int y;
PicoFrameStartMode4();
for (y = 0; y < lines; y++)
{
pv->v_counter = Pico.m.scanline = y;
if (y == lines_vis + 1) {
if (y < lines_vis)
PicoLineMode4(y);
else if (y == lines_vis + 1) {
Pico.video.pending_ints |= 1;
if (Pico.video.reg[1] & 0x20) {
elprintf(EL_INTS, "vint");
@ -232,6 +230,5 @@ void PicoFrameMS(void)
}
PsndGetSamplesMS();
elprintf(EL_ANOMALY, "frame end");
}