.extern s68k_reg_write8
.extern s68k_poll_adclk
.extern PicoCpuS68k
+.extern s68k_poll_detect
+.extern SN76496Write
@ r0=reg3, r1-r3=temp
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
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:
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
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
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
+
@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@