Re: ROM-Drive Update

[Will Smith <wsmith@ctron.com>]

On Tue, 1 Dec 1998, Terence J. Boldt wrote:

> It boots!  Well, sort of.  I fixed up the code so it should work with
> any ROM-drive size up to 512K and fixed the bug in the startup.  Apparently
> the ProDOS code does run if you execute it at $801 and not $800.  Also,
> I had trouble losing bytes once the address was higher.  It turns out that
> it was drawing too much power causing the high outputs of the latches to
> appear low to the ROM sometimes.  I jumpered the output enable and chip
> enable together so that it will only turn on the ROM when it needs to.  This
> fixed lots and suddenly it booted ProDOS 2.0.3 with BASIC 1.5.  It only
> boots about 1 in 5 times.  It usually crashes after the ProDOS startup
> screen or sometimes when starting BASIC.SYSTEM.  It only takes one wrong
> byte to make it crash.  Reliability will be improved soon.  At least it's
> on the right track.

this is GREAT news!  i'm following the goings-on...  keep up the good
work!  :)

---
William Smith    timex-at-tpau.kluge.net
Biddeford, ME    http://www.kluge.net/~timex