We've got a Tektronix 4051 with the optional Data Comms Interface and tons
of tape cartridges. As the belts in the Scotch/3M DC300 tapes are worn out
or torn I need to copy the contents 1:1 to other media. But how?
The simplest would be to write a simple BASIC program that will read in
each tape file and send it over V.24 (and back again for new media).
I'm looking for a solution that will work with all file types (e.g.
SECRET program files). It would be nice if there was a way to program the
4051 in machine language in order to have raw access to the files and its
headers.
Christian
On Nov 10, 2007, at 10:00 AM, cctalk-request at classiccmp.org wrote:
> hello all,
> i have an SGI indigo2 which ive installed a 2GB IBM hard drive in.
> however,
> from a cold boot, i receive a drive/cable error, and it asks me to
> press any
> key to continue. when i do, i press start system and it all comes to
> life.
> im assuming it takes longer for the drive to spin up than the indigo2
> takes
> to wait for the drive. is there a way to adjust this? thanks
Which drive? IBM has a number of 2GB drives, and I know definitely that
one of them (0664) doesn't work in a R3k Indigo at all. OTOH, SGI OEMed
some IBM drives, so it isn't all of them (the 0664 was originally from
a RS/6000 AFAIK).
The Hitachi site has setup sheets still for many old IBM drives - see
if there's a "spinup on power-on" jumper.
>
> Message: 4
> Date: Mon, 05 Nov 2007 12:31:28 -0700
> From: woodelf <bfranchuk at jetnet.ab.ca>
> Subject: Re: modern serial terminal
>
> PS. I like windows/95 over the latest versions of linux ... Too much bloat.
>
There was never a version of Linux, or UNIX in general, less bloated
than Windows 95. Windows 95 will very comfortably get you TCP/IP,
protected memory, preemptive multitasking[1], and a graphical desktop on
a 486 SX with 8M of RAM. Linux 2.0 with XF86 3.x was a carnival of
swapping on that configuration. Solaris x86 wouldn't even boot.
If Windows 3.1 was the last nail in the coffin for UNIX on the desktop,
Windows 95 was the last shovel of dirt and the weepy obit.
It's almost fun to load up Redhat 4 on a typical PC of the day and watch
it take twenty minutes to boot.
[1] Yes, Windows 95 had memory protection and preemptive multitasking.
All native win32 and native kernel code ran that way. The catch was that
16 bit drivers and applications were exempted from these restrictions.
Worse still, Windows 95 shipped with some 16 bit drivers for generic
devices, giving you a broken configuration out of the box on a lot of
hardware.
Date: Fri, 9 Nov 2007 16:54:18 -0500 (EST)
From: bpope at wordstock.com (Bryan Pope)
Subject: Re: Commodore PET
>DRAM!? In a PET?! That is crazy talk! ;) There was never even DRAM in
>the C64... Although I believe the SuperCPU used DRAM memory, but that
>was third-party.
--------
Say what?
AFAIK all their stuff used DRAM except for the first two 8K versions and the
oddball VIC-20 (or VolksComputer as it was known in Germany to avoid the
connotations of a certain homonym of VIC, pronounced 'fick' in German...),
which they probably produced to use up 2114s left over from the old PETs ;-)
I've never owned or seen any 8K PETs other than the 6540/6550 version,
but as Ethan says there was a 2114 version with industry-standard ROMS;
>=16K units were all DRAM AFAIK. Once DRAM caught on it didn't make
economic sense to use SRAM in any quantity; look at S-100 boards.
m
-----------Original Message(s):
Date: Sat, 10 Nov 2007 19:38:08 +1300
From: Ethan Dicks <ethan.dicks at usap.gov>
Subject: Re: Commodore PET
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Message-ID: <20071110063808.GA31194 at usap.gov>
Content-Type: text/plain; charset=us-ascii
On Fri, Nov 09, 2007 at 09:23:25PM -0700, Richard wrote:
>
> That's cool! This is the first I've heard of bitmapped graphics on
> the PET.
The first bit-mapped board I saw for the PET was by, IIRC, MTU. It was
advertised in Byte, etc., in the day. Never saw one up close, just
screenshots of plotted mathematical equations.
-ethan
------------Reply:
Ah, their logo, the ubiquitous 'hat'...
Just happen to have one; the first version was actually designed for the
KIM & SYM (SRAM BTW) and when the PET came out they made an
adapter board for it; the second version was specifically for the PET and
had DRAM, and they could both also be used as ordinary expansion
memory. They also made music boards & software for KIM/SYM/PET,
expansion chassis, and other neat stuff for 6502-powered machines.
Their catalogue'll make you drool...
m
Date: Thu, 8 Nov 2007 18:37:39 -0800 (PST)
From: Cameron Kaiser <spectre at floodgap.com>
Subject: Re: Commodore PET
>> "Collectible Microcomputers" says: $150 to $400 (chiclet keyboard),
>> $25 to $150 (typewriter keyboard)
>>
>> But I don't find that their idea of prices translates at all to the
>> real world. Maybe about 10 years ago when noone cared about vintage
>> computers, but not now.
>FWIW, my Chiclet PET cost me a cool $900.
--------
Feh! My 8032/8050 cost me $5000!
And the Chiclet PET >$1000 IIRC.
Of course, that was a while ago, when no one cared about vintage computers
'cause there weren't any to speak of, and in CDN$ when they were worthless ;-)
Gonna run downstairs right now to replace the upgrade keyboard with the
original keyboard & tape drive; oughta double my net worth... ;-)
mike
> I have a drive and controller that Don Maslin gave me supposedly from
> a Tek terminal of some sort. It's a Wangtek drive and a like-sized
> controller board with an 8085 on it. Interfaces on both ends are 50
> conductor--if the computer side was something like SASI, it wouldn't
> surprise me--I've never had to use it. The pinch roller in the drive
> is in pretty bad shape now, though that could be dealt with without
> too much trouble, I imagine. I wonder if the drive-side interface
> isn't QIC-36, which would mean that there are PC-based controllers
> available for it.
--
The tape drive in a 405x predates QIC. The head is fixed in place and
uses one track for clock and one for data. It is more similar to digital
cassettes than the later QIC drives.
Date: Thu, 8 Nov 2007 23:37:52 -0500
From: "Golan Klinger" <gklinger at gmail.com>
Subject: Re: Commodore PET
>The last PET 2001 with the chiclet keyboard I bought cost me $35.
>Clearly, there are bargains to be had. $150 is a fair price though.
Shhhh!
I wanna find another Cameron that'll give me $900!
(CDN$, none of that US green paper...)
mike
Anyone has the above ?
It is a 14 pin TTL IC, according to google some sort of CRC generator.
It is part of the mididisk controller of the ETH Lilith, which I am
reverse engineering.
Jos
