[sebhc] Boot ROM modifications

Barry Watzman Watzman at neo.rr.com
Wed Aug 10 11:11:39 CDT 2005

I don't think that your problem is a function of the boot rom.

My recollection is that the boot rom only reads in track zero and then
transfers control to the code contained therein.  All subsequent activity is
a function of whatever code was on track zero, not of the boot rom.  Track
zero, of course, can be read identically on either a 40 track or an 80 track
drive.  Thus, your issue lies in the boot code on the floppy, not in the
boot code in the ROM.

[I think]

-----Original Message-----
From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of
West, Ronald S.
Sent: Wednesday, August 10, 2005 11:59 AM
To: 'sebhc at sebhc.org'
Subject: [sebhc] Boot ROM modifications

Wonder if anyone knows if there was a boot ROM mod to allow the use of a 80
track drive for booting an H17 disk? I managed to get a TEAC FD-55GFR 193-U
drive to read a hard sector boot floppy and display the "(BOOT)" prompt on
my H-8/H-19. It won't go any further in the boot process as it only steps 1
track instead of 2 needed for the 80 track drive. 

If someone is interested in how this was done let me know and I will send in
the details.

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