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- From: bwl2324@mzdmza.zdv.uni-mainz.de
- Subject: FDC (NEC mirco765) programming
- Message-ID: <Q5K0TOU@minnie.zdv.uni-mainz.de>
- Sender: usenet@minnie.zdv.uni-mainz.de (USENET News System)
- Nntp-Posting-Host: vzdmzb.zdv.uni-mainz.de
- Reply-To: bwl2324@mzdmza.zdv.uni-mainz.de
- Organization: Johannes-Gutenberg Univ. Mainz
- Date: Fri, 8 Jan 1993 11:49:46 GMT
- Lines: 12
-
- Hello,
-
- I try to program the FDC for sending disk sectors via DMA/channel 2
- into memory. This works fine if I read the disk before starting my routine
- but if I try to read a disk sector right after booting the FDC status shows
- that FDC can't find the Address mark (bit 3 in status byte 0 is set).
- I take this step to get the FAT-sector to examine the diskette's format.
- I tried to recalibrate the disk drive but it doesn't help.
- Any considerations ?
-
- Thanks for helping,
- Steve
-