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removed some indirect jumps

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@236 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-09-02 09:59:13 +00:00
parent fb9bec948e
commit bf53765555
1 changed files with 10 additions and 22 deletions
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32
Pico/Memory.s
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@ -298,8 +298,7 @@ m_read8_rom4: @ 0x200000 - 0x27ffff, SRAM area
strneb r1, [r3, #0x11]
m_read8_detected:
tst r1, #4 @ EEPROM read?
ldrne r0, =SRAMReadEEPROM @ (1ci if ne)
bxne r0
bne SRAMReadEEPROM
m_read8_noteeprom:
tst r1, #1
beq m_read8_nosram
@ -373,10 +372,9 @@ m_read8_misc_io:
ands r0, r0, #0x1e
beq m_read8_misc_hwreg
cmp r0, #4
ldrle r2, =PadRead
movlt r0, #0
moveq r0, #1
bxle r2
ble PadRead
ldr r3, =(Pico+0x22000)
mov r0, r0, lsr #1 @ other IO ports (Pico.ioports[a])
ldrb r0, [r3, r0]
@ -391,15 +389,13 @@ m_read8_misc2:
mov r2, #0xa10000 @ games also like to poll busreq,
orr r2, r2, #0x001100 @ so we'll try it now
cmp r0, r2
ldreq r2, =z80ReadBusReq
bxeq r2
beq z80ReadBusReq
and r2, r0, #0xff0000 @ finally it might be
cmp r2, #0xa00000 @ z80 area
bne m_read8_misc3
tst r0, #0x4000
ldreq r2, =z80Read8 @ z80 RAM
bxeq r2
beq z80Read8 @ z80 RAM
and r2, r0, #0x6000
cmp r2, #0x4000
mvnne r0, #0
@ -410,12 +406,11 @@ m_read8_misc2:
tst r1, #1
beq m_read8_fake_ym2612
tst r1, #0x200
ldreq r2, =YM2612Read_
ldrne r2, =YM2612Read_940
beq YM2612Read_
b YM2612Read_940
.else
ldr r2, =YM2612Read_
b YM2612Read_
.endif
bx r2 @ ym2612
m_read8_fake_ym2612:
ldr r3, =(Pico+0x22200)
@ -917,22 +912,15 @@ m_write8_z80_bank_reg:
m_write8_not_z80:
and r2, r0, #0xe70000
cmp r2, #0xc00000 @ VDP area?
bne m_write8_misc4
bne OtherWrite8 @ passthrough
and r2, r0, #0xf9
cmp r2, #0x11
bne m_write8_misc4
bne OtherWrite8
m_write8_psg:
ldr r2, =PicoOpt
mov r0, r1
ldr r2, [r2]
tst r2, #2
bxeq lr
ldr r2, =SN76496Write
bx r2
m_write8_misc4:
@ passthrough
ldr r2, =OtherWrite8
bx r2
b SN76496Write