< old Altair hackers, so.... How hard would it be (for a software guy) to
< replace the ROM with something else, say, a parallel cable from a PC that
< fed data through the ROM socket?
not easy at all. You really need to make or buy an eprom emulator that can
do 6830 (an oddball pinout).
< The clock is already very slow, 500KHz, I think, but I could slow it to
< 1HZ if it would help. Could I software decode the address, do whatever
< handshaking I need to do from the TTL-levels on LPT1, and emulate a ROM
< without buying a ROM emulator?
Not possible, there is a minimum clock spec as the internal registers are
dynamic and would forget.
Allison
That's correct. Now, the interesting thing is that according to pinout
charts, the keyboard cables are the same (clock, data, not used, ground,
+5). However, the keyboards are not compatible. Does anyone know what
the difference is?
>I don't know much about Amigas, but I beleive the mouse is a
>quadrature-output mouse - what the PC crowd call a Bus mouse (and not a
>serial mouse or PS/2 mouse). These mice are pretty generic apart from
the
>connector wiring. If you're prepared to change the connector (and trace
>out the connections) then you can move these mice between systems.
>
>In the UK you can get replacement quadrature mice from Maplin - either
2
>button for the Amiga or 3 button for the Atari ST. I've modified these
to
>work on a Mac+, an old Amstrad that used a bus mouse, a Whitechapel
MG1,
>an Acorn Archimedes, etc. They're not cheap (about 3 times the price of
a
>PC serial mouse :-(), but they are available.
>
>-tony
>
>
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> I'd like to do some assembly language programming on my Apple //+. What
> program was generally used to do AL programming? Did you typically use the
> built-in Monitor, or was there an "Apple Assembler" program?
>
As for assemblers for the 64 if you want to do on-the-fly assembly Supermon is
cool, there is a version of it in just about all the popular super utility
cartridges (i.e. Super Snapshot, Final Cartridge, etc.)
As far as more quality (disk based) assemblers I would go with Lew Lasher's
Editor Assembler (circa 1985, hard to find, freeware, and nice) or Merlin
(especially Merlin 128 for the Commodore 128). Both are good ones to learn
with. There are other like Buddy, PAL, Bettwe Working, etc. but those use the
BASIC interpreter to code (line numbers and all.)
> Second, has anyone heard of a Commodore C64k?? I found a news post where
> a guy had two of these available, but I don't recognize the "k" suffix.
I think the person added it himself.
There are four flavors of the Commodore 64.
Commodore 64 - The original unit, roundy brownish-grey case dk. brown
keyboard, a good machine.
Commodore 64c - The updated (low-profile lt.cream case, white keys) cost
reduced model unlike other reponses no voices were removed. The story is
Commodore did a 'bug fix' on the sound chip that affected games that utilized
a perceived flaw on the sound chip that made digitized sound playback easy, on
the 64c you can barely hear the digitized segments.
Commodore SX-64 - the Commodore 64 in a luggable all-in-one unit included 64,
5" color display, built-in 1541 disk drive and audio speaker. Pretty cool,
used original C64 chips though Commodore altered the ROMs to better support
the built in drive at the sacrifice of cassette support (and compatibility
with some programs and hardware that required it.)
Commodore-128 - One of the facets of the Commodore 128 is the C64 mode, the
chips reflect the older 64 and is 99.94% perfect in emulation except for one
memory location which can bump the computer into 2mgz mode thereby messing up
the display provided by the 1mghz 40 column display chip. :/ Some earlier
games inadvertanly activate this mode.
If I wanted to do only 64 stuff the original grey 64 is the one to get.
--
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
Larry Anderson - Sysop of Silicon Realms BBS (300-2400bd) (209) 754-1363
Visit my Commodore 8-Bit web page at:
http://www.goldrush.com/~foxnhare/commodore.html
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
Sam Ismail wrote:
>Could someone please describe the features of a PET 2001 for me? Thanks.
>
>
Depends on the PET 2001, the earlier ones had a smallish calculator type
keyboard with an integeral datasette unit. Newer models had a full sized
keyboard and no built-in datasette.
All of the 2001 series had 9"display, earlier ones displaying whitish-blue the
rest gool 'ol green phosphor.
The original BASIC (Powers up with *** COMMODORE BASIC ***) has neumerous bugs
and lacked disk support the upgrade BASIC (### COMMODORE BASIC ###) had many
bug fixes and is very close to 64 BASIC in operation and syntax.
There are two motherboards associated with the 2001 the 8k static ram
motherboard (only in original PETs) which was limited to 8k ram and used MOS
RAMs (Which they soon stopped producing, they just weren't good at memory
chips) and the later Dynamic RAM boards which were expandible to 32k.
If you need more info there are a couple links:
The PET FAQ geared for the recent or general owner of a Classic PET:
http://www.goldrush.com/~foxnhare/petfaq.html
and
The PET Index for the Technical sort of person who wants to know what makes em tick!
http://www.tu-chemnitz.de/~fachat/8bit/petindex/petindex.html
--
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
Larry Anderson - Sysop of Silicon Realms BBS (300-2400bd) (209) 754-1363
Visit my Commodore 8-Bit web page at:
http://www.goldrush.com/~foxnhare/commodore.html
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
as you might guess, the VT220 w/o keyboard is spoken for. The others
still need homes though.
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
OK,for any of you blokes over in blighty I saw this post on Obsolete
Computer Helpline.
PLEASE DIRECT QUERIES TO THE POSTER BELOW
ciao larry
>Trig <TrigyUk(a)hitch-hikers.demon.co.uk>
>Salisbury, Wilts U.K. - Sunday, July 05, 1998 at 17:15:08
> I have a small collection of 10 - 15yr old apricots, xen, xi and
>various other related bits.
> Can anyone help me find a home for these cute computers?
lwalker(a)interlog.com
What is the pinout of the 23-pin port?
>If your multisync syncs down to 15khz, there is no requirement for
>special hardware. The NEC Multisyncs up through the 3D all sync
>down to 15Khz as do many others.
>
>>
>> >Also, are the keyboard and mouse PC-compatible?
>>
>> Alas, no. The keyboard will run you about $60, and the mouse about
$15.
>> Your best bet is to try and find someone local to you that has
abandoned
>> the Amiga to join the mindless masses. I recently got a rather nice
setup
>> that way very cheap.
>>
>> You didn't mention what kind of processor you've got in the system or
what
>> kind of boards it has. The stock is 68000, but it might have a 68020
or
>> 68030 on an accelerator board. Do you have a Hard Drive controller?
>>
>> The ultimate A2000 would have a dual 68060/PPC acclerator, UW SCSI
Hard
>> Drive, about 128Mb RAM, Ethernet, either a Video Toaster or a Picasso
IV
>> graphics card and be running Amiga OS 3.1, of course you don't want
to know
>> the price of all of that.
>>
>> One of my main systems is a fairly beefy A3000 that I just got done
putting
>> in a Tower case this weekend (metal working skills required). The
Amiga OS
>> beats anything MS has ever put out, and beats MacOS on certain
points.
>>
>> I think the best way to sum up Amiga's is that they are just plain
fun! It
>> would be well worth your time to either fix up that one, or find a
working
>> one.
>>
>> Zane
>> | Zane H. Healy | UNIX Systems Adminstrator |
>> | healyzh(a)ix.netcom.com (primary) | Linux Enthusiast |
>> | healyzh(a)holonet.net (alternate) | Classic Computer Collector |
>> +----------------------------------+----------------------------+
>> | Empire of the Petal Throne and Traveller Role Playing, |
>> | and Zane's Computer Museum. |
>> | http://www.dragonfire.net/~healyzh/ |
>>
>
>
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Get Your Private, Free Email at http://www.hotmail.com
Ok the 10th is right around the corner so I'll post this one last time
before It goes with the scrap.
Visual 102 terminal with keyboard - complete and working, good shape
DEC VT 100 without keyboard - working as far as I can tell and good
shape
DEC VT 220 without keyboard - working again as far as I can tell, good
shape.
These are free except shipping. I need a firm answer for a home by
Firday and then a money order for the estimated shipping by the 20th or
they go to terminal heaven. hate to do this as I'm sure someone can use
them.
I still have the last of the working HP 700/44's with keybaord and
lookig like brand new for $15 plus shippping too, but I have the room to
put it back for a while and maybe even use it later.
Direct emai please - RHBLAKE(a)BBTEL.COM or RHBLAKE(a)BIGFOOT.COM
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
While hunting in DejaNews for VAX 11/730 info I found this to pass on. Msg
a bit old it seems but may be worth checking to see if yet available.
Of course, make sure you contact snowcrash(a)elitemicro.com directly :)
>Subject: VAX for free!
>From: snowcrash(a)elitemicro.com (Snowcrash)
>Date: 1998/06/08
>Message-ID: <001801bd931c$18c716f0$7b7b7b7b@ironmaiden>
>Newsgroups: muc.lists.netbsd.port.vax
>[More Headers]
>[Subscribe to muc.lists.netbsd.port.vax]
>
>This is a multi-part message in MIME format.
>
>------=_NextPart_000_0015_01BD92F2.2F4565A0
>Content-Type: text/plain;
> charset="iso-8859-1"
>Content-Transfer-Encoding: quoted-printable
>
>
> OK guys, since all I have is an old 11/730, which can't support =
>NetBSD, and basically I have no clue how to set any of it up, I'm gonna =
>give it away. It is in the Houston, TX area. You pick it up or arrange =
>the transportation if you are intrested. Here's what I know about it.
>
>
>Vax 11/730
>(1) RA81
>(2) RA80
>(1) TU80
>(1) RL02
>Some other stuff I can't identify.
>Also about 30 assorted terminals.
>
> Daniel Daley, CNE
> snowcrash(a)elitemicro.com
>
>
-- --
Christian Fandt, Electronic/Electrical Historian
Jamestown, NY USA
Member of Antique Wireless Association
URL: http://www.ggw.org/freenet/a/awa/
I intended a very gentle guiding message for Max, and in no
way said anything about censorship except self-restraint in
the form of editing recommendations (endlessly requoted
messages with one-liner replies drive me up a wall).
I gave general advice to search the net before posting, as
opposed to treating the mailing list as a magic oracle
that answers all your questions. Save the list for the
truly obscure questions, not the stuff that's on hundreds
of web pages.
- John
