IBM PC hacking

[Tony Duell]

> > A real kludge would have been to use a couple of printer port cards
> > (which would give you 24 output lines) and a little external circuitry to
> > program an EPROM. These EPROMs were not hard to program 'by hand'.
> >
> > -tony
> 
> the problem is not that obvious when pc's are everywhere.
> 
> I read the data onto a floppy on said PC.  I did not own the programmer,
> so transfering it via RS232 was not that useful.  I could run a program and

I think you misunderstood me. I was suggesting using a couple of IBM 
parallel cards, along with ROM basic on the PC (or disk basic, or 
whatever) to make a crude EPROM programmer (it would take a handful of 
TTL parts). Use that to blow a BIOS image into a 'master' chip. Then copy 
that on your Data-IO

-tony