CS/A65 PC floppy interface
This board implements a shugart bus interface as used in the standard PC floppy disk drives (5.25" and 3.5").
News:
- 2006-11-01 Added driver code.
Table of content
Driver
PETCPU test
This file includes a small test program that does a "readaddress" command on the WDC and either prints the sector header (in reverse) or the WDC status register in case of an error.
This driver runs on a PETCPU with the Commodore PET ROMs (just 'dL"test1"' :-) and expects the card I/O at $E8C0 (WD177x) and $E8D0 (VIA).
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test1.tar.gz |
OS/A65 shugart bus floppy driver
This driver handles the WD1770/1772 shugart bus floppy device.
It is included in the fsibm filesystem code
and provides the interface the filesystem expects.
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DINIT- initialize the device -
DFORMAT- format a floppy -
GETDPB- get the disk parameter block that describes the disk format -
RWSEC- read or write a sector -
DLOOP- loop to check disk changed, or to switch motor on or off
dchanged to
signal that a disk has been changed.
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drv_wd1770.a65(floppy driver) |
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wd1770.i65(wd1770 register definitions) |
Board revisions
Version: 1.0B
Status: ok
Notes
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This board implements a (shugart-type i.e PC-type) floppy disk controller. The board has been tested with 5.25" and 3.5" PC disk drives. |
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Using this board with HD-drives (i.e. 1.44M 3.5" floppies overclocks the WDC1772 chip used in this board, as it is only specified for DD-disks (720k). |
Files
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csashug.ps.gz |
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csashug.png |
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csashug.fig |
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csashugparts.txt |
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csashugdesc.txt |
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csashug.jpg |
