mirror of
https://github.com/Pecusx/jataricart.git
synced 2026-05-21 14:49:37 +02:00
Jakub Husak
71 lines
1.3 KiB
NASM
71 lines
1.3 KiB
NASM
TRIGGER_FORMAT_29F equ $10
|
|
C_FORMAT_29F equ $80
|
|
C_BYTE_PROG_29F equ $a0
|
|
M_SSIZE_29F equ $10000 ; sector size; MAXFlash, protocol compatible with 39sf0x0
|
|
command_ZP_29F = $f0
|
|
|
|
M_VECTORS_29F
|
|
jmp softid_entry_29F
|
|
jmp softid_exit_29F
|
|
jmp flashoppreamble_29F
|
|
jmp flash_lockchip_29F
|
|
jmp flash_unlockchip_29F
|
|
dta c'29F0x0',0
|
|
|
|
flashoppreamble_29F
|
|
pha
|
|
lda #C_BYTE_PROG_29F
|
|
scc
|
|
lda #C_FORMAT_29F ; only if c set
|
|
sta command_ZP_29F
|
|
pla
|
|
.byte {bit.w}
|
|
flashoppreamble_acc_29F ; 39sf0x0, 29F040
|
|
sta command_ZP_29F
|
|
txa
|
|
pha
|
|
; when write byte x must be set to either 0 or 40 temporarily
|
|
and #$40
|
|
tax
|
|
sta $d502,x
|
|
mva #$aa $b555 ; $5555<$aa
|
|
sta $d501,x
|
|
mva #$55 $aaaa ; $2aaa<$55
|
|
; $5555<$80
|
|
sta $d502,x
|
|
mva command_ZP_29F $b555; will become command: FORMAT/ID_MODE/BYTE_PROG
|
|
cmp #C_FORMAT_29F
|
|
bne @+ ; if not FORMAT, procedure finishes
|
|
; FORMAT part, more to write
|
|
sta $d502,x
|
|
mva #$aa $b555 ; $5555<$aa
|
|
sta $d501,x
|
|
mva #$55 $aaaa ; $2aaa<$55
|
|
@ pla
|
|
tax
|
|
flash_lockchip_29F
|
|
flash_unlockchip_29F
|
|
rts
|
|
|
|
;read_manufacturer_29F
|
|
; sta $D500,x ; x=0 or $40 else will read wrong
|
|
; lda $a000
|
|
; rts
|
|
|
|
;read_product_29F
|
|
; sta $D500,x ; x=0 or $40 else will read wrong
|
|
; lda $a001
|
|
; rts
|
|
|
|
|
|
softid_exit_29F
|
|
sta $D500,x ; x=0 or $40 else will read wrong
|
|
lda #$f0
|
|
sta $a000
|
|
rts
|
|
|
|
softid_entry_29F
|
|
lda #$90
|
|
bne flashoppreamble_acc_29F
|
|
|