[rescue] Cheapest Cray?
Janet L. Campbell
janet at foonly.com
Mon Apr 26 18:40:42 CDT 2004
On Mon, 26 Apr 2004, Dave McGuire wrote:
> Wow, they need to check a LOT of their facts. They state that Zilog
> only made chips, not computers...this is woefully incorrect, as I've
> *owned* Zilog computers.
I think that a friend of mine had an IBEX, I seem to remember it being a
> And not only is Zilog "still in business", and they are doing some
> "new" things, they're also churning out classic Z80 chips in amazing
Well...they just announced the closure of their last fabrication plant.
They're still in business, but will be having all of their parts fabbed by
other companies in Asia.
The Z80 was fun. I vividly remember tinkering around with EDTASM on my
old TRS-80 Model I, complete with 500bps tape drive. My first project was
writing a disassembler. My second project was copying the ROM into RAM,
making it relocatable, and patching in multitasking (via an interrupt).
It wasn't reentrant, sadly, but at least I could debug assembly code a lot
more sanely. At only 12KB the entire ROM was pretty understandable.
I started a project once to "sandbox" assembly code by doing instruction
by instruction interpretation, and halting when an "unauthorized" access
(usually a write) occurred. It was pretty slow except for instructions
like LDIR/LDDR (because the boundary checking only needed to be done once
for the block) but it was useful for testing. Then I got access to a VAX
11/750, and I knew that I couldn't keep messing around with PCs. Once I
wrote a modem program that could manage mostly-usable terminal emulation,
I stopped hacking on bitty boxes.
The lack of upper case (and 64x16 display) were real pains, though. Kids
> Those folks seem to have more than their fair share of stupidity.
> They need to spend a little more time learning about those systems
> before they start giving bad information out to the public.
Sadly, it's a sign of the times.
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