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Merge pull request #750 from oliverschmidt/master

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Fixed hardware detection.
This commit is contained in:
Oliver Schmidt 2014-07-12 12:29:35 +02:00
commit 682aa2e730
1 changed files with 18 additions and 19 deletions
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37
cpu/6502/net/lan91c96.S
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@ -67,7 +67,7 @@ len: .res 2 ; Frame length
.else .else
.include "zeropage.inc" .include "zeropage.inc"
reg := ptr1 ; Address of register base reg := ptr1 ; Address of register base
ptr := ptr2 ; Indirect addressing pointer ptr := ptr2 ; Indirect addressing pointer
len := ptr3 ; Frame length len := ptr3 ; Frame length
@ -168,16 +168,24 @@ init:
inc ptr+1 inc ptr+1
bcs :- ; Always bcs :- ; Always
; Check bank select register upper byte to always read as $33
: ldy #$00
fixup01:sty ethbsr+1
fixup02:lda ethbsr+1
cmp #$33
beq :+
sec
rts
; Reset ETH card ; Reset ETH card
: lda #$00 ; Bank 0 : ; Bank 0
fixup01:sta ethbsr fixup03:sty ethbsr
lda #%10000000 ; Software reset lda #%10000000 ; Software reset
fixup02:sta ethrcr+1 fixup04:sta ethrcr+1
ldy #$00 fixup05:sty ethrcr
fixup03:sty ethrcr fixup06:sty ethrcr+1
fixup04:sty ethrcr+1
; Delay ; Delay
: cmp ($FF,x) ; 6 cycles : cmp ($FF,x) ; 6 cycles
@ -189,21 +197,12 @@ fixup04:sty ethrcr+1
; Enable transmit and receive ; Enable transmit and receive
lda #%10000001 ; Enable transmit TXENA, PAD_EN lda #%10000001 ; Enable transmit TXENA, PAD_EN
ldx #%00000011 ; Enable receive, strip CRC ??? ldx #%00000011 ; Enable receive, strip CRC ???
fixup05:sta ethtcr fixup07:sta ethtcr
fixup06:stx ethrcr+1 fixup08:stx ethrcr+1
lda #$01 ; Bank 1 lda #$01 ; Bank 1
fixup07:sta ethbsr fixup09:sta ethbsr
; Check ISA mode base address register for reset values
lda #$18^67 ; I/O base $300 + ROM $CC000
fixup08:eor ethbar
fixup09:eor ethbar+1
beq :+
sec
rts
:
fixup10:lda ethcr+1 fixup10:lda ethcr+1
ora #%00010000 ; No wait (IOCHRDY) ora #%00010000 ; No wait (IOCHRDY)
fixup11:sta ethcr+1 fixup11:sta ethcr+1