demonlg wrote on 2021-12-03, 08:15:
Hi, sorry if i resume this old post, i have two of the same machine, one working fine and other have an 603 603 error on boot after wrong floppy cable way, and conseguent drive chips blown up, now the system wont boot from floppy and from hdd it stay to seek for 4 times and then going to basic, same hdd in other machine working perfect. But the question is, i have the your same sound card, two in effect, with ide connecto for CDROM used in 1990, but, do you have connected CFcard and the system automatically boot from this or i need any modification on BIOS or other? I have also inserted an ISA floppy+hdd controller but the floppy seek is present, wont boot from floppy and wont boot from ide hdd.
Thanks in advice.
I am not sure if the machine will disable the onboard floppy controller if you install an ISA one.
If not, then you don't want two controllers installed or there could be bus contention and instability or damage.
Perhaps the floppy controller chip is bad. It's a standard part so can be replaced. I'd ask on the PS/2 Facebook group what could be damaged by a reverse floppy cable.
The system BIOS doesn't support IDE HDDs at all. You need a BIOS Extension ROM.
I'd recommend the "ATL" version of XT-IDE BIOS, configured for a single 16-bit IDE interface at the I/O address your sound card is configured for (if the sound card is identical to mine, the address is 170h, IRQ15).
I can provide the ROM you need. You can put it in a network card, or a DoubleROM card (one of my products).