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iderom: fixup AT-Bus offset stuff

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This commit is contained in:
Matt Harlum 2023-04-22 17:06:09 +00:00
parent 6db2b712b3
commit dc1538b8c2
1 changed files with 6 additions and 5 deletions
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11
iderom/bootldr.S
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@ -107,11 +107,12 @@ MyConfigDev: dc.l 0
Init: movem.l d2-d7/a2-a6,-(sp)
move.l MyConfigDev(PC),a1
move.w cd_Rom+er_InitDiagVec(a1),d0 ; Get rom offset
ror.l #8,d0 ; If the rom offset is odd
andi.l #1,d0 ; Fix up the driver offset
addi.l #DRIVEROFFSET,d0
move.l #DRIVEROFFSET,d0
move.w cd_Rom+er_InitDiagVec(a1),d1 ; Get rom offset
cmp.l #8,d1 ; LIV2 board with even rom addrss?
beq .even
.odd add.l #1,d0 ; No, AT-Bus style board with odd address
.even
move.l BoardBase(PC),a0
bsr _relocate
tst.l d0