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Preparation for supporting card in any slot

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Bobbi Webber-Manners 2021-06-04 00:25:48 -04:00
parent d4e3bc4109
commit bc29b3621e
1 changed files with 18 additions and 12 deletions
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30
apps/setmac/setmac.s
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@ -164,30 +164,36 @@ Main1: cld
jmp NextSys
.endproc
.proc setmac
; Actually set the MAC address on the Uthernet-II
; TODO: Make this slot independent and not hard-coded
; Hard-coded for slot 5
ldy $d0 ; Slot 5 offset
; Set the MAC address on the Uthernet-II
; TODO: Hard-coded for slot 5.
ldy $d5 ; Slot 5 mode reg offset
lda #$80 ; Reset W5100
sta $bfff+$d5 ; Store in MODE register
sta $bfff,y ; Store in MODE register
lda #$03 ; Address autoinc, indirect
sta $bfff+$d5 ; Store in MODE register
sta $bfff,y ; Store in MODE register
lda #$00 ; High byte of MAC reg addr
ldx #$09 ; Low byte
sta $bfff+$d6 ; Set high byte of pointer
stx $bfff+$d7 ; Set low byte
iny ; $d6
sta $bfff,y ; Set high byte of pointer
iny ; $d7
stx $bfff,y ; Set low byte
ldx #$00
iny ; $d8
: lda mac,x ; Load byte of MAC
sta $bfff+$d8 ; Set and autoinc
sta $bfff,y ; Set and autoinc
inx
cpx #6
bne :-
lda #$00 ; High byte of $001a reg addr
ldx #$1a ; Low byte
sta $c0d5 ; Set high byte of pointer
stx $c0d6 ; Set low byte
dey
dey ; $d6
sta $bfff,y ; Set high byte of pointer
iny ; $d7
stx $bfff,y ; Set low byte
lda #$06 ; Magic value: MAC set!
sta $bfff+$d8 ; Set and autoinc
iny ; $d8
sta $bfff,y ; Set and autoinc
rts
mac: .byte $00,$08,$0d,$00,$de,$ad
.endproc