29 Jun
2005
29 Jun
'05
4:47 a.m.
On Tue, 2005-06-28 at 22:02 -0400, der Mouse wrote:
All this talk of 2708s and how to program them makes
me wonder....
I've got some PROMs of various sorts (mostly UV-erase, but a few 28xxx
EEPROMS). I'd like to throw together a burner. But to this end, I
find I care about things such as differences between one maker's 27512
and another's.
Certainly my Elan programmer likes to know what specific manufacturer
made the device it's programming, rather than just a general class of
device. As found out recently, it doesn't seem capable of handling
three-rail devices though, which is a shame. It's old enough that it
won't do anything about 1MBit either, although that's rarely a problem
for classic stuff.
It uses plug-in cartridges which define the devices that it knows about
(it's a PAL programmer as well as EPROM), uses a Z80 as the CPU, with a
keypad for user control and LCD for display - I/O to a host is via
serial, in a variety of user-selectable data formats.
Wish I had the specs for the cartridge data format so I could add other
stuff.
Building a similiar sort of thing based around an S100 CPU board (say)
could be in interesting project for someone; if the PAL side of it is
ignored then it's probably not *that* complex a task.
cheers
Jules