From: John Chris Wren <jcwren(a)jcwren.com>
Assuming I wanted to get a ZX-81, what would I want?
Take a stable ZX81 or TS1000 and pull off the composite video to feed a
monitor. Add a decent keyboard and bump the RAM to 64KB. You'll want a
printer and a good cassette recorder, too.
If you don't plan to add any hardware which requires a ROM, then you might
want to add NVRAM to the unoccupied 8-16K address space. A Hunter board is
perfect for this, if you can find one.
If you require hardware which could benefit from having code in ROM, then
the 8-16K space can be used by an add-on ROM.
And are there any
really good 'net resources for the ZX-81?
Yes! The ZX-TEAM home page is a good place to start:
http://home.t-online.de/home/p.liebert/zx-team.htm
Kai Fischer's ZX96 page shows an example of how far you can take this
machine:
http://home.freiepresse.de/befis/zx96_e.htm
Zebra Systems in NYC still sells unbuilt kits, but they are expensive:
http://www.zebrasystems.com/zebrasystems/zx81/index.html
For software, visit the University of Trondheim archive:
ftp://ftp.nvg.unit.no/pub/sinclair/zx81/
You can download the software and transfer it from a DOS-based PC to the
ZX81 using ZXTAPE and a modified PC-type parallel printer cable.
One program which is indispensable if FASTLOAD, which allows 4800 baud
cassette I/O, as opposed to the native 300 baud. This means you can LOAD a
16 KB program from cassette in < 40 seconds instead of 5 minutes.
The possibilities really are endless. My main ZX81 has an 80 MB hard drive
hung off it, which I will never come close to outgrowing. Let me know if
you have more questions . . .
Glen
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