Panasonic HHC info?
'Computer Collector Newsletter'
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Wed Jul 13 15:20:23 CDT 2005
I have the main HHC instruction manual. Will scan it once I find it (which
could take a few days!).
From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org]
On Behalf Of David Betz
Sent: Wednesday, July 13, 2005 4:00 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Panasonic HHC info?
Well, I have my HHC working pretty much. I replaced the batteries but that
didn't really help the "insufficient memory" errors. I'm wondering if it is
necessary to expand the memory to use the Basic ROM.
Does anyone have a copy of the HHC documentation or any information on
programming it either in Basic or SNAP?
On Jul 12, 2005, at 1:46 PM, Roger Merchberger wrote:
> Rumor has it that David Betz may have mentioned these words:
>> I finally received my HHC Basic ROMs yesterday and they seem to work.
>> (Thanks Roger!)
> I *think* (and with the minimal remaining number of functional
> neutrons in my head, that's a toughie! :-O ) I have everyone caught up
> on the HHC Basics. To those people who were severely delayed on
> receiving their chips, I publicly apologize -- It was never my
> intention to let this project go "lax" like it did.
> If I did forget you, please raise your hands! Then lower them again,
> and type out an email to me, and I'll get you taken care of.
> I currently have a couple of days of "minimal insanity" with which I
> can clean up any last loose ends.
>> I do have a problem where it claims I have insufficient memory to
>> save even the smallest program. I seem to remember hearing someone
>> else complain of that problem as well but I never saw anyone post a
> That would've been me; I may have an idea to the cause, but I've not
> had a chance to try it. See below.
>> Has anyone been able to save programs? Is there some trick involved?
>> This is the first time I've used the machine and I suppose there
>> could be left over stuff in RAM that needs to be deleted.
> I found that I could get 1 program entered and running, by manually
> deleting everything I could find in the 'filesystem' and immediately
> going to the Basic and setting it to program input mode. [[ This is
> the first time I'd used the machine as well... ]]
> However, there was other 'flakeyness' with my HHC as well, and so I
> don't think it's a 'Basic-only' problem.
>> I would think it would have disappeared long ago though since the
>> batteries were dead when I bought the machine and I am only able to
>> run it off of the power supply. Has anyone had success saving
> I *think* (and knowing near nothing about this machine, I really,
> really stress *think*) that the batteries _need_ to be functional.
> A lot of portable machines of this era used the batteries as an
> oversized 'smoothing capacitor' for lack of a better term and would
> not operate correctly without a working battery pack. (I have a Tandy
> 600 which exhibited similar memory wackyness when running it from AC
> only with no battery pack installed.)
> I have not had time to test this theory, however, so I might be 'full
> of condensed milk' as my father-in-law used to say.
>> Also, my machine has a menu entry offering to run SNAP programs but I
>> have been unable to find a description of the SNAP language. I
>> believe it is a Forth derivative. Can someone point me to a
>> description of the SNAP language?
> Wish I could; SNAP sounded kewl. What I can tell you is the machine
> uses a CMOS 6502, so if anyone can find a way to read the internal
> ROMS or figure out the BASIC enough to program a ROM dump utility,
> should be pretty easy for one who's good with 6502 disassemblers to
> maybe glean some knowledge about it. (M'self, I'm more a 6809 kinda
> As I have some really good soldering/desoldering tools now, I could
> take a stab at desoldering the ROM chip[s] and reading 'em directly...
> 1) I wouldn't know where in memory it resides without manually tracing
> address lines & whatnot (which I don't have time for) ...
> or ...
> 2) I wouldn't have time to do this for at least a couple of months.
> But hey, we've been waiting almost 10 years now for Basic, right???
> Roger "Merch" Merchberger
> Roger "Merch" Merchberger | "Profile, don't speculate."
> SysAdmin, Iceberg Computers | Daniel J. Bernstein
> zmerch at 30below.com |
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