test-drb September 2006

test-drb@ccmp.vtda.org

200 participants
374 discussions

by billdeg＠degnanco.com

I have always used them interchangeably, but I never bothered to check. The jack fit, I used it. I *assume* that Commodore would not have made the 128 and A500's power supply ports be the same, unless they believed the associated power supplies were compatible. Otherwise it would be a product support headache. It would be a great advantage from a repair/supply perspective to be able to use the same supply brick. That said, only Commodore would do something as bone-headed as try to save money by using the same power supply jacks/ports with incompatible bricks! Bill D >Will a C128 power brick be able to handle an Amiga 500? It looks to >have a higher rating than the Amiga 600 brick I have (for that >matter, can it drive an A500). > >Spent a lot of time up in storage, found a cable to let me hook my >A500 up the the Commodore 2002 monitor I use with the C64, and >*FINALLY* found a pair of Joysticks. Unfortunately they're Epyx >500JX sticks, and about the only sticks I've used that are worse >might be Commodore's clone of the Atari sticks. Also dug up two more >C64's (I think one is a C64c, do they say they're a "C" anywhere), a >1541 drive, a bunch of carts (including another Epyx Fastload), some >software, and a printer interface. > >I seriously considered bringing the C128 and A500 back (thankfully >found the external drive also today), but decided against the A500 >since I wasn't sure about the powersupply and it was getting to hot >to try to get back to the C128. > > Zane >

18 years, 3 months

Commodore C128/A500 Power bricks

by aliensrcooluk＠yahoo.co.uk

--- "Zane H. Healy" <healyzh at aracnet.com> wrote: > > I did some looking and it appears that the A600 > supply is most > powerful of the A500/A600/A1200 supplies! However , > as I got the A600 > (and a pair of unstable A1200's) well after the > A500, this is a > pretty good indication that I have an A500 power > supply somewhere. > The odds are, wherever that is, is also where one of > my *good* Wico > Joysticks is :^) > > Zane > Err... I disagree with you Zane. I just checked both of my A500 PSU's (made in Germay) and my A600 PSU (made in China) and came up with the following: A600 PSU "Lightweight" (Part No. 391029- ) Input: 230-240V ~ 50 Hz 300 mA T1A Output: 5V 3.0A 12V 500mA -12V 100mA A500 PSU "Heavy Brick" (Part No. 312503-02) Input: 240V 50Hz 60W Output: + 5V 4.3A +12V 1.0A -12V 0.1A Going by those figures (on the underside of the PSU's), I'd say the A500 PSU is the most powerful. Regards, Andrew B aliensrcooluk at yahoo.co.uk

18 years, 3 months

Vintage Computer Festival 9.0(composite reply)

by roger.holmes＠microspot.co.uk

On 8 Sep, 2006, at 18:09, cctech-request at classiccmp.org wrote: > Whereabouts are you? About eight miles from Ashford in Kent. Ashford is where the channel tunnel rail link has its last station before France, called Ashford International. I am out in the sticks but I can e-mail maps. My home has a claim to fame, 'The Darling Buds of May' was filmed here and in the surrounding villages. > Of course, the perfect venue, history wise, would be H Block at > Bletchley > Park - the home of the WWII codebreaking Colossus machines and the > world's > first purpose-built computer building but its availability is still in > question..... Yes this would be the perfect venue. Is this the building due to house the computer museum? Roger Holmes.

18 years, 3 months

PDP-8/e EAE not working

by ajp166＠bellatlantic.net

> >Subject: Re: PDP-8/e EAE not working > From: Fred Cisin <cisin at xenosoft.com> > Date: Sun, 10 Sep 2006 12:48:55 -0700 (PDT) > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >> Jay West wrote: >> > Woah! A "spare time generator"??? I want one!!!!!! >On Sat, 9 Sep 2006, woodelf wrote: >> But you need to supply a *flux Capacitor* .:) >> It still amazes me that a 4096 word computer >> can have hardware aided floating point. > >I don't have enough spare time to build one. >Besides, don't you need to connect a DC transformer to an AC battery to >make it work? > That might work. I was told a AC battery, A round Tuit and a green eyed lady were required. The problem is getting all three in the same room. Seems they are atomic. ;-) Now feet, do your stuff.. Allison

18 years, 3 months

PDP-8/e EAE not working

by chd_1＠nktelco.net

A couple of years ago I got an EAE off of ebay and it has never worked with my -8/e. I was looking at it again and see that my M8330 Timing Generator board is too early a revision to work with the EAE. I need at least rev B (I think). Does anyone have a spare M8330 they could part with? I kick myself for not grabbing a spare processor off of ebay over the years. Otherwise does anyone have a working EAE that would be willing to talk about with me?

18 years, 3 months

CompuPro floppy controller differences

by ajp166＠bellatlantic.net

> >Subject: RE: CompuPro floppy controller differences > From: "Chuck Guzis" <cclist at sydex.com> > Date: Sun, 10 Sep 2006 09:31:51 -0700 > To: cctalk at classiccmp.org > >On 9/10/2006 at 9:13 AM Allison wrote: > >>All my CCS disks are 8" I'd have to look to see if the controller even did > >>5.25 it's been so long. I do remember the CCS used a banking scheme that >>didn't agree with most of my systems. > >Yup, I've got samples for a CCS with 256, 512 and 1024 bytes/sector. All >are 48 tpi, MFM. So do I but all mine are 8". However having a H207 dual 8" makes it work as the h207 has a very similar size and look as the CCS crate (long to the back and narrow). As a result I've never fitted 5.25 to the CCS, no need. I've been tempted to fit 3.5" drives to it as it would do 720/780k formats as is off the 5.25 interface. All I'd have to do is tweek the BIOS for that(2S, 80C, 512 format) and maybe tweek the formatter for 80 cylinders and 2 sides. Allison

18 years, 3 months

2.4 Megabyte Floppies

by jwstephens＠msm.umr.edu

These are 5 1/4" form factor floppies, but hold twice the data. I have already searched ebay and google, so I need other suggestions, or someone who can part with some I don't know if regular or "premium" 5 1/4 inch 1.2mb media can be formatted and used with them or not. Thanks. Jim

18 years, 3 months

Broken Mac Accelerator

by compoobah＠valleyimplants.com

There is a chance that a little bit of carbonized something is providing enough of a load to hamper operation, though. Pull off the cap and see what happens. Also make sure that the board is intact, sometimes bits can get damaged by "blasting caps".

18 years, 3 months

VAXServer 3600 and MicroVax I in Seattle WA.

by michaelgreen42＠comcast.net

I've recently come into possession of a VaxServer 3600 and a MicroVax I that I'm taking offers on. Don't really know anything about them and of course no way to power up. They appear to be in fairly good shape except the MicroVax I has a little damage to the plasic in the front. I also should be comeing into possession of a Tektronics 25" Video Graphics Color Console and a few other things that were described as museum quality. Items are in the Seattle Washington area.

18 years, 3 months

CompuPro floppy controller differences

by ajp166＠bellatlantic.net

> >Subject: RE: CompuPro floppy controller differences > From: Allison <ajp166 at bellatlantic.net> > Date: Sun, 10 Sep 2006 09:13:54 -0400 > To: cctech at classiccmp.org > >> >>Subject: RE: CompuPro floppy controller differences >> From: "Richard A. Cini" <rcini at optonline.net> >> Date: Sat, 09 Sep 2006 13:59:08 -0400 >> To: "'General Discussion: On-Topic Posts Only'" <cctech at classiccmp.org> >> >>All: >> >> I looked at the CompuPro disk image on Dave Dunfield's site and it's >>for an 8" drive. The defining thing for me is getting a CP/M 2.2 image in >>5.25" format. I've found another controller, from CCS (California Computer >>Systems) that might work, too. So does anyone have a 5.25" CP/M 80 image for >>either of these two boards? >> >> Thanks. >> >>Rich > >All my CCS disks are 8" I'd have to look to see if the controller even did >5.25 it's been so long. I do remember the CCS used a banking scheme that >didn't agree with most of my systems. I decided to pull out the CCS system and check. I'd forgotten as it smaller than most s100 crates and it gets tucked away easily. It does do 5.25" though the docs refer to 8" disti media only. The Eprom on mine has the MOSS monitor and boot, IO expects standard CCS. If you have CCS IO you at least have a monitor. Allison

18 years, 3 months

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test-drb September 2006