diff options
Diffstat (limited to 'zruntime.S')
| -rw-r--r-- | zruntime.S | 7 |
1 files changed, 4 insertions, 3 deletions
@@ -68,7 +68,7 @@ z80_read_byte_noinc: cmp $0x8000, %r13w jae z80_read_bank /* TODO: Bank reg, YM-2612, PSG/VDP */ - mov $FF, $r13b + mov $0xFF, %r13b ret z80_read_ram: and $0x1FFF, %r13 @@ -125,10 +125,11 @@ slow_bank_write: ret z80_write_bank_reg: and $1, %r13w - shl %r15w + shr %r15w + shl $8, %r13w + xor %r12, %r12 or %r13w, %r15w and $0x1FF, %r15w - xor %r12, %r12 cmp $0x80, %r15w jb update_bank_ptr ret |