test-drb April 2006

test-drb@ccmp.vtda.org

200 participants
412 discussions

by kyrrin＠bluefeathertech.com

Fellow Techies, I have a device (a GPS-referenced clock) that uses an Intel N80C188-16 microprocessor, in a 68-lead PLCC package. Odd as it may sound, I suspect this chip of being defective, and I've been attempting to locate a match for it so I can prove or disprove that theory. The original part is, of course, no longer manufactured as far as I can tell. Hunting around on the 'net turned up a couple of modern equivalents, one of which is an Intel TN80C188EA20. As near as I can tell, the only difference with this chip is that it can be clocked a bit faster (20MHz instead of 16), and that it has an extended operating temperature range. There are two other possible candidates available, though not in stock at the moment. Both are made by Intel. One is the N80C188XL20, and the other is the other is the TN80C188XL20. I know just enough about these chips to be wary of differences in prefix and suffix letters. With that in mind, I have two questions for the group. (1) Of the above replacements I've mentioned, which one is most likely to be a direct plug-in replacement for the suspect chip? (2) Failing that -- Does anyone happen to have a known-good N80C188-16 that they could be convinced to part with? In this same instrument is a Motorola MC68HC11A0FNC11W in a PLCC-52 package. I need to find a viable replacement for it as well. I've had a harder time tracking down possible replacements for it. The only ones I've come across so far, that are available without an enormous minimum purchase, are the MC68HC11E0CFN2, the MC68HC11E1CFN2, and the MC68HC11E1CFN3. Once again, I'm very leery of mixing/matching suffix codes due to lack of knowledge. I do know this much: The Motorola part is operating with an external EPROM, so the chip itself is ROMless. Assistance with this mess would be much appreciated. Thanks in advance. -=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com kyrrin (at) bluefeathertech do/t c=o=m "If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"

18 years, 3 months

Old apple ascii keyboard

by us21090＠yahoo.com

Hi, I'm thinking about building one of obtronix's apple 1 (ebay 8790381782), but he doesn't supply a keyboard with these latest kits (like he used to). These are the old-old ascii style. Connection to the keyboard is via a socketed 16 pin dip. The signals are 7-bit parallel with a strobe signal. Gnd and +5v are supplied to the keyboard from the Apple1. I'm told that Apple II and II+, early Franklin apple-clone systems used a compatible keyboard. The Apple 1 manual: "Any ASCII encoded keyboard, with positive data outputs, interfaces with the Apple system via a "DIP" connector." I've been looking around for a keyboard, without cannibalizing working systems (even the Franklin). Any of you have working keyboards on non-working Apple II/II+/Franklin-clone that you are willing to part with? Thank you! Scott P.S. (hmm, maybe I shouldn't have made the crack about the Franklin). --------------------------------- Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls. Great rates starting at 1¢/min.

18 years, 3 months

Tek 4041

by josef.deuschinger＠web.de

Hi Roger, I don't know, if you still have your 4041, but I have the solution for your problems. I found some DC-100 tapes, changed an ASCII keyboard, so I could type in the necessary commands and stored them on tape. It works great with a notebook and terminal program. Perhaps we can make a change, because I am looking for the programmers reference and operating manual (e.g as PDF files) as well as for the Utility ROM pack and ROM pack manuals. I would appreciate hearing from you. Best regards, Josef ------------------------------------------------------------- *Roger Goswick* ccfsm at ipa.net <mailto:cctalk%40classiccmp.org?Subject=Tek%204041&In-Reply-To=> /Wed Jul 28 12:34:54 CDT 1999/ Hi All: Does anyone have any information on the Tektronix 4041? I've got a hankering to play with the IEEE-488 bus but can't see paying the current prices that most people seem to want for a IEEE-488 controller for a P.C. I've acquired an Tek 4041 with 512-K and the rom Basic development firmware and even the manuals. But I don't have the (optional) keyboard OR the diagnostics tape. If I could find this tape then I could simple use a RS-232 terminal for program input. I've even got a nice HP 150 that could serve as a terminal, but I need that tape!! Speaking of which, this thing uses a DC100 tape. Know where a soul can find any of these tapes for less that $25.00 each? I know that GP-IB controllers are considered kind of low life - but for some reason I'm hooked on this one (could be the 68008?). Hell, you know what? I'm afraid that old computers are going to be as addicting as old analog synthesizers and Tektronix mainframe o'scopes. Thanks all. Roger Goswick ccfsm at ipa.net <http://dewey.classiccmp.org/mailman/listinfo/cctalk>

18 years, 3 months

OT: Intel Mac dual booting now officially supported

by fireflyst＠earthlink.net

I agree, this wasn't even on topic to begin with - or even close to what's allowed as off-topic. > -----Original Message----- > From: cctalk-bounces at classiccmp.org > [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Robert Borsuk > Sent: Wednesday, April 05, 2006 2:51 PM > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: OT: Intel Mac dual booting now officially supported > > I'm sorry to bring this up (I know I'm being a stick in the > mud) but can we take this topic off the list. I'm a big mac > user (in fact I'm typing this on my powerbook) but I like > this list for the classic not the modern. > > Rob > > > On Apr 5, 2006, at 3:37 PM, der Mouse wrote: > > >>> So now what is the difference between an Intel Mac and PC? > >> the mac is still horribly over priced. > > > > Even if the Mac's sticker price is more than the peecee's > (and I saw > > one comment in this thread which implies it isn't, though I am > > familiar with neither's price point myself), this does not > necessarily > > make the Mac overpriced. I've never seen an Intel-CPU Mac. > But I've > > seen recent PowerPC Macs, and if they stick to the same level of > > quality, the Intel Mac is worth signifcantly more money than a > > commodity peecee with similar paper specs. > > > > /~\ The ASCII der Mouse > > \ / Ribbon Campaign > > X Against HTML mouse at rodents.montreal.qc.ca > > / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B >

18 years, 3 months

OT: Intel Mac dual booting now officially supported

by aek＠bitsavers.org

I wonder how many Mac users even feel the need to run Windows apps? -- Only when I'm forced to by scanner vendors who only supply Windows drivers (book scanner, IS520, and Mekel microfiche scanner). I do absolutely nothing else on them, and use an exported RAID from a reliable system to store the resulting scans.

18 years, 3 months

Z80 TRAP and CP/M

by melamy＠earthlink.net

actually it was the Intel bozos. Intel released the triple supply 2708 then TI released their triple supply TMS2716. Intel released the 2716 single supply and then TI was forced to create a single supply chip and they called it the TMS2516. I don't recall TI ever making a triple 2732 by the way(probably did, bit I don't remember). TI stuck with the 25xx designations because they did not want to confuse their earlier triple 2716. best regards, Steve Thatcher >>(ref: IC Master 1982) >>Presumably chosen by Mostek to be as close as possible to the MK385x, MK387x >>F8 family numbers just to make the probability of confusing everyone as high >>as possible. > >No, *that* distinction goes to the bozos at TI with their >non-2732, 2732 (IIRC). So, if you wanted what the rest of >the world called a 2732, you had to order a 2532! (IIRC, 3 >power supplies on their 2732..?)

18 years, 3 months

4k/8k PDP-8 OSes was Re: register-impoverished childhoods

by spectre＠floodgap.com

> > Since you brought it up :) what OSes can you run on a 4K PDP-8? > > There are a bunch of stand-alone programs, and a 4K Disk Management > System that lets you load and save programs from disk. Depends on > how you define OS, I guess. (The resident part of the OS is pretty > much just a bootstrap to get the command language interpreter back > into memory.) > > More OSes run in an 8K PDP-8 :-). Such as? (Subject line changed) I'm just curious since I've always found its instruction set fascinating. -- --------------------------------- personal: http://www.armory.com/~spectre/ --- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- If Barbie is so popular, why do you have to buy her friends? ---------------

18 years, 3 months

OT: Memory Available - 2 gb

by SUPRDAVE＠aol.com

In a message dated 4/5/2006 11:15:08 A.M. Eastern Standard Time, Mzthompson at aol.com writes: I won a pallet of machines at auction and there was a monitor sized box on top on the machines full of flotsam and stuff. Found a board with memory down in the box. I say OT as the memory is date coded 1998 and 2003. There board is a DELL memory expansion board, probably >from a server with 16 memory sockets. It's 1998 vintage. On the board are 8 sticks of 256 mb memory, 168 pin DIMM. The tag on 4 sticks says 256mb, EDO, 50ns, ECC. They are Micron MT36LD3272G-5 X. The other 4 sticks are SEC KMM372F3200BK4-5 Mike Thompson ---------------- Just in case anyone is interested, the part is probably from a dell poweredge 6400 series. The memory is buffered IIRC as the notches are positioned differently.

18 years, 3 months

OT: Memory Available - 2 gb

by Mzthompson＠aol.com

I won a pallet of machines at auction and there was a monitor sized box on top on the machines full of flotsam and stuff. Found a board with memory down in the box. I say OT as the memory is date coded 1998 and 2003. There board is a DELL memory expansion board, probably >from a server with 16 memory sockets. It's 1998 vintage. On the board are 8 sticks of 256 mb memory, 168 pin DIMM. The tag on 4 sticks says 256mb, EDO, 50ns, ECC. They are Micron MT36LD3272G-5 X. The other 4 sticks are SEC KMM372F3200BK4-5 This is not SDRAM. The notch near pin 1 is in the center, not offset as with SDRAM. The memory sockets are marked STD DRAM, not UDRAM. I don't forsee ever using this memory so I will make it available here. I am asking $45 for the eight sticks and that includes shipping anywere in the USA. If by chance you want the board also, I'll include it as a bonus. I don't have any way to test this memory but will offer a refund in the event. Mike Thompson

18 years, 3 months

Old apple ascii keyboard

by melamy＠earthlink.net

don't get too excited about California Digital. He has never bothered to take down his website. He has very little of what is advertised. He sold off everything a few years ago... He does still have Xerox CP/M on 5 14" media and some other items, but call first... -----Original Message----- >From: woodelf <bfranchuk at jetnet.ab.ca> >Sent: Apr 4, 2006 5:35 PM >To: General Discussion at null, On-Topic and Off-Topic Posts <cctalk at classiccmp.org>, null at null >Subject: Re: Old apple ascii keyboard > >Chuck Guzis wrote: > > >> http://www.cadigital.com/inputd.htm >> >> Certainly worth a call--I recognize the middle keyboard in the photo and it >> is indeed ASCII. It's the Hall-effect one and is a very nice unit.

18 years, 3 months

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test-drb April 2006