You don't happen to have documentation for the Dutronics board? I have one and have no clue how it hooks up. I only see where you plug it into the 8080a slot and a single wire that comes out that is supposed to hook up to something...
email me directly at corey@...
so I can ask you more questions about it.
--- In firstname.lastname@example.org, joshbensadon wrote:
> --- In email@example.com, "Bill Sudbrink" wrote:
> > Joshbensadon wrote:
> > >
> > > --- In firstname.lastname@example.org, "DanielB" wrote:
> > >
> > > >I am much more comfortable in the digital logic world.
> > >
> > > You have an option to remove the Dutronics board and return to an 8080A
> > > processor.
> > Should you decide to do that for some reason, I will happily buy
> > that from you. I'll even sell you a nice ceramic 8080.
> > Bill S.
> A trade for a Ceramic 8080A + 8212 chip for the Dutronics board IMHO would be fair. It would let Daniel experience an original IMSAI 8080.
> The problem with the Dutronics board is when you hit STOP, you might not always land on an M1 cycle, so the EXAMINE & DEPOSIT buttons won't work until you are on an M1 cycle. You have to manually advance the processor with SINGLE STEP to the next M1.
> And then there's the problem of running some software designed for the 8080A (4K BASIC is the common example). The Z80A is not a perfect replacement for the 8080A. The Dutronics board (with all it's extra logic chips) does a good job at coming *close* to mimic the 8080A.