per-line scrolling test
[mdlife] / src / z80.inc
1         .equ Z80_MEMMODE,       0xa11000
2         .equ Z80_BUSREQ,        0xa11100
3         .equ Z80_RESET,         0xa11200
4         .equ Z80_MEM,           0xa00000
5
6         .macro z80_grab
7         move.w #0x100, Z80_BUSREQ
8         .endm
9
10         .macro z80_grab_wait
11         move.w #0x100, Z80_BUSREQ
12 wait_z80_\@:
13         btst #0, Z80_BUSREQ
14         bne.s wait_z80_\@
15         .endm
16
17         .macro z80_release
18         move.w #0, Z80_BUSREQ
19         .endm
20
21
22 | vi:ft=gas68k: