13 Dec
2005
13 Dec
'05
11:48 p.m.
On Tue, 13 Dec 2005 16:19:05 -0700
woodelf <bfranchuk at jetnet.ab.ca> wrote:
Brian Wheeler wrote:
My Needham PB-10 EPROM burner is an ISA card with a ZIF socket on
a dongle that hangs out the back. It uses two 6821 PIAs on the
ISA card and a number of other commonly chips (iow- it is a
durable design and 'repairable forever.' All the programming
algorhythms and 'mechanism' of it is in the included PC software.
I paid, I think, a little over $100 for it new. And Needham PB-10
burners are not uncommon on the used market. And I've run it in a
Linux box using a DOS emulator successfully in the past. (by
'punching holes' in the emulator config to allow dosemu to
directly access specific I/O ports)
In college we wire-wrapped a pdp-8. The final was
to repair it
in 2 hours after the instructor had made several changes to
either the wire wrappings, chip orientation (hot chips!) or PAL
changes. The 2nd semester was wire-wrapping a 6809-based FLEX
system.
Was that the CMOS pdp chip or a TTL designed PDP?
That said, the only thing that's really kept
me from building
machines (heh, besides time and money!) is the lack of an eprom
(or eeprom) burner.
What do you guys recommend? Are there instructions for
PC-driven burners online somewhere that seem reasonable? If
not homebuilt, what's a reasonable price for one?
Use of a EEPROM may be a better idea as I think there are low
cost designs that hang off the printer port to burn a eeprom. I
think commercial burners run at
$399+ but I can't say for sure.
>Thanks!
>Brian
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