mirror of
https://github.com/mgcaret/of816.git
synced 2024-09-11 19:57:26 +00:00
47 lines
1.3 KiB
ArmAsm
47 lines
1.3 KiB
ArmAsm
.p816
|
|
.a16
|
|
.i16
|
|
.include "macros.inc"
|
|
.include "./Neon816-hw.inc"
|
|
|
|
.segment "ROMBOOT"
|
|
.proc romboot
|
|
clc
|
|
xce
|
|
rep #SHORT_A|SHORT_I
|
|
.a16
|
|
.i16
|
|
lda #$01FF
|
|
tcs
|
|
; Set up MMU for bank 0
|
|
ldx #$001C
|
|
lda #$8000
|
|
: sta f:NeonMMU,x
|
|
dex
|
|
dex
|
|
bpl :-
|
|
jml f:Neon_ROM
|
|
.endproc
|
|
|
|
.segment "VECTORS"
|
|
.proc vectors
|
|
; native mode vectors
|
|
.word $FFFF ; FFE0 - reserved
|
|
.word $FFFF ; FFE2 - reserved
|
|
.word $FFFF ; FFE4 - COP
|
|
.word $FFFF ; FFE6 - BRK
|
|
.word $FFFF ; FFE8 - ABORT
|
|
.word $FFFF ; FFEA - NMI
|
|
.word $FFFF ; FFEC - reserved
|
|
.word $FFFF ; FFEE - IRQ
|
|
; emulation mode vectors
|
|
.word $FFFF ; FFF0 - reserved
|
|
.word $FFFF ; FFF2 - reserved
|
|
.word $FFFF ; FFF4 - COP
|
|
.word $FFFF ; FFF6 - reserved
|
|
.word $FFFF ; FFF8 - ABORT
|
|
.word $FFFF ; FFFA - NMI
|
|
.word .loword(romboot) ; FFFC - RESET
|
|
.word $FFFF ; FFFE - IRQ/BRK
|
|
.endproc
|