mirror of
https://github.com/bobbimanners/emailler.git
synced 2024-07-15 15:29:02 +00:00
108 lines
1.6 KiB
Plaintext
108 lines
1.6 KiB
Plaintext
;taken from DocBacardi's CRT8040 tool - http://freenet-homepage.de/LittleDreamLand/CRT8040.html
|
|
|
|
#segdef "zp", $57-$72
|
|
#segdef "bank0", $8000-$9f10, force, fillup
|
|
#segdef "common", $df10-$e000, force, fillup
|
|
|
|
#outfile @, $00, "bank0", "common"
|
|
|
|
;--------------------------------------
|
|
; init the startadr of all segments
|
|
|
|
.segment "zp"
|
|
* = $57
|
|
|
|
.segment "bank0"
|
|
* = $8000
|
|
|
|
.segment "common"
|
|
* = $df10
|
|
|
|
;--------------------------------------
|
|
; init the rr registers and copy
|
|
; bank 3 to ram
|
|
|
|
.segment "bank0"
|
|
|
|
.DW Bank0_Reset ;Reset vector
|
|
.DW $fe5e ;NMI vector is not used here, points to system
|
|
.PET "CBM80" ;Reset Magic
|
|
|
|
Bank0_Reset:
|
|
lda #%01000111 ;Standard Memory Map, No Freeze, No Banking in $DF00 (+ allow access to accessory connector - Jonno 2009-08-20)
|
|
sta $de01
|
|
|
|
ldx #kickStack_len-1
|
|
copyKickStack:
|
|
lda kickStack_org,x
|
|
sta kickStack,x
|
|
dex
|
|
bpl copyKickStack
|
|
jmp kickStack
|
|
|
|
kickStack_org:
|
|
.pseudopc $0900
|
|
kickStack:
|
|
|
|
ldx #$1f
|
|
ldy #0
|
|
copyCrt:
|
|
lda #%00101011 ; switch to bank 1
|
|
sta $de00
|
|
delay0:
|
|
nop
|
|
iny
|
|
bne delay0
|
|
copyPage0:
|
|
smod0:
|
|
lda $e000,y
|
|
sta $0400,y
|
|
iny
|
|
bne copyPage0
|
|
lda #%00110011 ; switch to bank 2
|
|
sta $de00
|
|
delay1:
|
|
nop
|
|
iny
|
|
bne delay1
|
|
copyPage1:
|
|
lda $0400,y
|
|
smod1:
|
|
sta $8000,y
|
|
iny
|
|
bne copyPage1
|
|
inc smod0+2
|
|
inc smod1+2
|
|
inc $d020
|
|
dex
|
|
bpl copyCrt
|
|
|
|
lda #%00110001 ; switch to 8040
|
|
sta $de00
|
|
delay2:
|
|
nop
|
|
iny
|
|
bne delay2
|
|
|
|
|
|
; during the copy process occured some irqs, clear them
|
|
lda $dc0d
|
|
lda $dd0d
|
|
asl $d019
|
|
|
|
; set registers
|
|
; NV-BDIZC
|
|
lda #%00110111
|
|
pha
|
|
lda #$c3
|
|
ldx #$00
|
|
plp
|
|
|
|
jmp ($8000)
|
|
|
|
kickStack_len = *-kickStack
|
|
.realpc
|
|
|
|
;--------------------------------------
|
|
|