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dCtlDevBase might be empty, but dCtlSlot is fine...

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This commit is contained in:
Romain Dolbeau 2022-07-14 09:33:15 +02:00
parent 3f3371a054
commit d7a344555e
1 changed files with 21 additions and 17 deletions
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6
nubus-to-ztex-gateware/DeclROM/NuBusFPGARAMDskDrvr_OpenClose.c
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@ -18,6 +18,7 @@ OSErr cNuBusFPGARAMDskOpen(IOParamPtr pb, /* DCtlPtr */ AuxDCEPtr dce)
SwapMMUMode ( &busMode ); // to32 // this likely won't work on older MacII ???
if (dce->dCtlDevBase == 0) { // for some unknown reason, we get an empty dCtlDevBase...
if ((dce->dCtlSlot > 0xE) || (dce->dCtlSlot < 0x9)) { // safety net
SpBlock mySpBlock;
SInfoRecord mySInfoRecord;
mySpBlock.spResult = (long)&mySInfoRecord;
@ -34,11 +35,14 @@ OSErr cNuBusFPGARAMDskOpen(IOParamPtr pb, /* DCtlPtr */ AuxDCEPtr dce)
if (ret)
goto done;
slot = mySpBlock.spSlot;
} else {
slot = dce->dCtlSlot;
}
dce->dCtlDevBase = 0xF0000000ul | ((unsigned long)slot << 24);
}
/* write_reg(dce, GOBOFB_DEBUG, 0xDEAD0000); */
/* write_reg(dce, GOBOFB_DEBUG, dce->dCtlRefNum); */
/* write_reg(dce, GOBOFB_DEBUG, dce->dCtlSlot); */
if (dce->dCtlStorage == nil) {
DrvQElPtr dq;