Atlas and floppy drive

sw8 · ‎2003-11-30

Posted on December 01, 2003 at 07:13

sw8 · ‎2003-10-15

Posted on October 15, 2003 at 10:32

We developed a card with STPC Atlas and SuperIO SMSC FDC37B782.

All the registers are initialized with ''STPC BOOT SOFTWARE'' from ST (without BIOS). The floppy drive doesn't work. We can write correctly all bytes in the sectors and we can also read them but the byte 00h which is read as FFh.

Has anyone any suggestion?

marios · ‎2003-11-13

Posted on November 13, 2003 at 18:26

If you have an ISA bus on your card, you can try to find an old combo I/O card like those used in the early AT systems, with hard-wired address decoding, and see if your BIOS works with an old standard chip. Might help.

I plan on using the same chips, but with the General Software BIOS. The old combo I/O trick worked with the Atlasisabd and the Gensw BIOS.

sw8 · ‎2003-11-30

Posted on December 01, 2003 at 07:13

Hi Felix,

thank you for your answer!

We've already worked around our problem putting pull-down resistors instead of pull-up on ISA bus SD0-SD7. This is an accettable solution because in our board we don't have other I/O devices on ISA bus.

Regards