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bugfixes, new scaling, double ym upd at 940

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@83 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-03-31 13:57:45 +00:00
parent 3d48f1437f
commit 2433f40912
22 changed files with 360 additions and 171 deletions
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26
Pico/cd/Memory.s
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@ -135,6 +135,8 @@ m_s68k_decode_write_table:
.extern s68k_reg_write8
.extern s68k_poll_adclk
.extern PicoCpuS68k
.extern s68k_poll_detect
.extern SN76496Write
@ r0=reg3, r1-r3=temp
@ -993,6 +995,10 @@ m_m68k_write8_vdp:
tst r0, #0x70000
tsteq r0, #0x000e0
bxne lr @ invalid
and r2, r0, #0x19
cmp r2, #0x11
andeq r0, r1, #0xff
beq SN76496Write
and r1, r1, #0xff
orr r1, r1, r1, lsl #8 @ byte access gets mirrored
b PicoVideoWrite
@ -1123,7 +1129,11 @@ m_m68k_write16_vdp:
tsteq r0, #0x000e0
bxne lr @ invalid
bic r0, r0, #1
b PicoVideoWrite
and r2, r0, #0x18
cmp r2, #0x10
bne PicoVideoWrite
and r0, r1, #0xff
b SN76496Write @ lsb goes to 0x11
m_m68k_write16_ram:
@ -1291,6 +1301,10 @@ m_m68k_write32_vdp:
tst r0, #0x70000
tsteq r0, #0x000e0
bxne lr @ invalid
and r2, r0, #0x18
cmp r2, #0x10
moveq r0, r1, lsr #16
beq SN76496Write @ which game is crazy enough to do that?
stmfd sp!,{r0,r1,lr}
mov r1, r1, lsr #16
bl PicoVideoWrite
@ -1410,6 +1424,9 @@ m_s68k_read8_regs:
tst r0, #0x7e00
movne r0, #0
bxne lr
sub r2, r0, #0x0e
cmp r2, #(0x30-0x0e)
blo m_s68k_read8_comm
sub r2, r0, #0x58
cmp r2, #0x10
ldrlo r2, =gfx_cd_read
@ -1424,6 +1441,13 @@ m_s68k_read8_regs:
and r0, r0, #0xff
bx lr
m_s68k_read8_comm:
ldr r1, =(Pico+0x22200)
ldr r1, [r1]
add r1, r1, #0x110000
ldrb r1, [r1, r0]
b s68k_poll_detect
@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@