Panasonic RL H-1400 - Information Needee

From: Cameron Kaiser <spectre_at_floodgap.com>
Date: Sun Aug 29 22:09:51 2004

> About the best I could do is to snail-mail the ROM to
> you. -or- I'll be in San Diego tomorrow - Monday.

That's a very generous offer, but there are two problems ... first I'm
presently in San Bernardino :( and won't be back in San Diego until Sunday,
and only Sunday at that.

The bigger problem, though, is actually getting the capsule out to read it.
I opened up my HHC-4 and dug out the NYL capsules, which I hadn't examined
too closely before. They *seem* to be regular 24-pin EPROMs (with an NYL
sticker conveniently covering the UV window; they're 4K TMS 2532s, for those
interested). The problem is not the chip, which seems to be a regular old
ROM. The problem is that the DIP legs are wrapped *around* the capsule
carrier, and digging the DIP out is probably going to damage the chip. I
could try wiring it into my Jason-Ranheim Promenade, but I don't see much I
could attach the wires to on the capsule side, and soldering leads directly
on to the DIP legs is right out because I'm very worried I would ruin this
first example of this capsule I've ever seen!

Is the BASIC ROM similarly "wrapped" on yours? If it is, perhaps there's
another way of doing this -- some way of reading out the contents of the ROM
using the HHC itself. If you've got the printer, maybe if we could scrabble
some way of printing out a hex dump, assuming this BASIC is halfway sane and
has PEEK and POKE or a moral equivalent. We'd just have to figure out where
in memory, but this is easier than it looks because it would have to start
on a 4K page boundary, meaning we'd only have to glance at 16 possible areas.
If one of them has BASIC keywords, we've found it.

All this to say I would be *very* antsy about damaging a *very* rare ROM
with my relatively novice EE skills, despite the fact I want it *very* much!
 
-- 
---------------------------------- personal: http://www.armory.com/~spectre/ --
 Cameron Kaiser, Floodgap Systems Ltd * So. Calif., USA * ckaiser_at_floodgap.com
-- Five is a sufficiently close approximation to infinity. -- Robert Firth ----
Received on Sun Aug 29 2004 - 22:09:51 BST

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:36:36 BST