diff options
Diffstat (limited to 'opcodes.s.m4')
| -rw-r--r-- | opcodes.s.m4 | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/opcodes.s.m4 b/opcodes.s.m4 index d4a9564..efd583a 100644 --- a/opcodes.s.m4 +++ b/opcodes.s.m4 @@ -98,6 +98,8 @@ || To align opcode routines. .set _align,0 +.ifndef TEST + .macro start .org emu_plain_op+_align .set _align,_align+0x100 | opcode routine length @@ -128,6 +130,24 @@ .org emu_plain_op+_align+0x4A .endm +.else +.macro START +.endm +.macro START_DD +.endm +.macro START_CB +.endm +.macro START_DDCB +.endm +.macro START_FD +.endm +.macro START_FDCB +.endm +.macro START_ED +.endm + +.endif + || LOHI/HILO are hideously slow for instructions used often. || Consider interleaving registers instead: || @@ -197,6 +217,7 @@ || lookup table +.ifndef TEST || This is run at the end of every instruction routine. done: clr.w d0 | 4 cycles / 2 bytes @@ -215,6 +236,14 @@ done: jmp 0(a5,d0.w) |14 cycles / 4 bytes .endm +.else +done: rts + +.macro DONE + rts +.endm +.endif + || Timing correction for more precise emulation || || \1 is number of tstates the current instruction should take |