test-drb September 2005

test-drb@ccmp.vtda.org

212 participants
437 discussions

by ajp166＠bellatlantic.net

I'm looking for schematics for MicroMint BCC180 rev1. Also Imagewise V2.0 reciever (ca1987) the earlier with DB25 connector. Any docs or schematic would help. Allison

21 years

Available for pickup.

by ajp166＠bellatlantic.net

I dont have these and the person that has them was talking dump real soon. > >Subject: Re: Available for pickup. > From: Chris M <chrism3667 at yahoo.com> > Date: Wed, 28 Sep 2005 04:47:52 -0700 (PDT) > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > >I'm interested, but it would be at least a couple of >weeks before I could conceivably drive up there. > >--- Allison <ajp166 at bellatlantic.net> wrote: > >> I take it that I can notify the owner that these >> systems are of no interest >> to anyone here. I cant take them, too much and too >> big. >> >> Allison >> >> >> > >> >Subject: Available for pickup. >> > From: Allison <ajp166 at bellatlantic.net> >> > Date: Mon, 26 Sep 2005 18:42:52 -0400 >> > To: cctalk at classiccmp.org >> > >> > >> >I do not hold these but I've been asked if I want >> them. >> > >> >Allison >> > >> > >> >>I sent this earlier to arrl.org, but I thought I >> would also try here. These >> >>are free to the first taker, but that may be the >> rubbish man ! >> >>Apollo 400 >> >>Apollo 715s/50 >> >>Apollo 715t/50 >> >>(2) Apollo 715/64 >> >>Apollo 400 >> > >> > >> >> > > > > >__________________________________ >Yahoo! Mail - PC Magazine Editors' Choice 2005 >http://mail.yahoo.com

21 years

VCF 8 lodging

by news＠computercollector.com

Hi all ... Re: VCF 8 lodging ... Sellam didn't book an official hotel this year. But I just checked with the Residence Inn Palo Alto (last year's official hotel) and they want about 160 per night. Also checked with the Hampton Inn and it's 130 per night. Best yet, the Quality Inn ( http://www.qualityinnmountainview.com ) is just 100 per night during the week, and 64 on weekends! (Granted, I'm staying for five days, and using a AAA discount.) They have hot breakfast, Ethernet in every room, wireless in the business lounge, a free fitness center, and even free laundry facilities. LOL, sounds better than my apartment! I'll be in town by Wed. night if anyone wants to get together pre-VCF. ----------------------------------------- Evan Koblentz's personal homepage: http://www.snarc.net Computer Collector Newsletter: http://news.computercollector.com Mid-Atlantic Retro Computing Hobbyists & Museum: http://groups.yahoo.com/group/midatlanticretro/

21 years

IBM PC hacking

by vp＠cs.drexel.edu

> > Then again, could you do useful word-processing work on a cassette-based > > machine? Anyone who use Atari 8-bit, C64, etc. -- was this common? I assume > > Scripsit (for the TRS-80 Model 1 and 3) was certainly available on a > cassette, with load/save of your text to cassette. It worked, but it > wasn't that practical :-) The BBC micro was cassette-based, but had a word processor in ROM (View). I remember using cassettes to save letters etc. Eventually I saved enough money to buy a single 720K floppy drive by Cumana (sp?). **vp

21 years

conserving paper stick-on IC labels

by compoobah＠valleyimplants.com

What is the best practice for conserving the stick-on custom labels on programmed logic (PALs, EPROMS, etc.)? I have a number in the IRIS that are falling off because of dried glue, and I'm debating the best way to reattach, or should new ones be made?

21 years

Where can I get DECmail-11?

by ISC277＠CLCILLINOIS.EDU

Hey I was just curious, because I don't see DECmail-11 listed on Mentec's or HP's website, does that mean that they don't care about DECmail-11 anymore? If so, does anyone know where I can get a copy? Julian

21 years

Looking for: BCC180 schematics and..

by ajp166＠bellatlantic.net

> >Subject: Re: Looking for: BCC180 schematics and.. > From: Scott Stevens <chenmel at earthlink.net> > Date: Wed, 28 Sep 2005 19:14:07 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> >> >On Wed, 28 Sep 2005 11:52:50 -0400 >> >Allison <ajp166 at bellatlantic.net> wrote: >> > >> >> I'm looking for schematics for MicroMint BCC180 rev1. >> >> >> > >> >I am too. But MicroMint still sells the Technical Reference and >people >> >here frown on even suggesting anybody share a copy. >> >> I'll have to sell something and go buy it then. I am concerned their >> tech reference is not for Rev1. >> >> >A helpful suggestion is that I found this place: > >http://www.maxipub.com/electro/microcontrollers.html > >They're selling BCC-180 boards used for $90 and say " Each board comes >with instruction manual and software (if needed)". If it comes with the >entire manual, that's a better deal than $25 for the manual alone. > >This appears to be the kind of 'controller' board where there is a >legacy market and the vendor takes the long-term approach of keeping it >commercial for a LONG time. MicroMint still wants $499 for a new >BCC-180. Basic Z80 thing. OK, this case a Z180 but that cpu is one of the legends of the controls industry. Allison

21 years

PCjr (Was Re: IBM PC hacking)

by mbbrutman＠brutman.com

I don't think that the lack of a DMA controller on the PCjr really slowed it down any. The old double density drives have a data rate of 250,000 bps. If the data is presented one byte at a time, that is just 31250 bytes per second. Even with multiple I/O clock cycles per byte to get it to the processor and then to memory, a 4.77Mhz processor can keep up with that easily. Where the lack of DMA would hurt you is on a much faster interface, such as a hard disk. Then you wouldn't have any cycles to spare, the the difference would show up. On a PCjr the lack of DMA shows up most when doing something time critical, such as servicing the serial port. The damn things can not access the floppy drive and run the serial port at the same time. As for the speed of a Jr, it's glacial compared to a PC because the first 128K of memory was shared with the video subsystem. It wasn't dual ported RAM, so the CPU had to wait while the VGA (Video Gate Array) chip refreshed the screen. The system was flexible in that almost 128K of RAM could be allocated to the video buffers, but that feature probably wasn't worth the performance hit. The best speed modification you can make to a Jr is to add more memory, and run your programs and data from there. Leave the first 128K for video and RAM disk. Unfortunately, DOS and the BIOS like to keep a lot of vital data down low, so you can't avoid that memory entirely. One of the Tandy 1000s was similar to the Jr, but they did the memory allocation correctly. They borrowed from the top of memory, not the bottom. That generally hid the performance problem and let DOS use more than 128K of memory without loading a device driver. Yes, a strange machine ... Mike

21 years

Some interesting boards by another seller on Ebay (sanyo, godbout, etc)

by jwstephens＠msm.umr.edu

I would not bother with ebay and have all have to search, but i found boards by several vendors that should be of interest to people on this list. The list of boards looks like one of us died, and all our boards went to this guy. Sanyo ICON Smile Host Interface Board (Used) Sanyo ICON PCP/16 16 Port Serial Board (Used) Sanyo ICON MDCP/3 Interface Board (Used) Sanyo ICON CPU / RISC Board w/ 24MB RAM (Used) Sanyo ICON MPS020-2 MultiBus Adapter w/ Systech Card Konan MFM drive / controller / cables, no software Lots of Godbout boards (counted maybe 5, before I quit) Lots of Atari Stuff (Curt, you interested in older stuff, 400 / 800, etc). INtel Above board. this is interesting if anyone here is running Intel ICE. the support software would not run unless you also had an above board, not an EMS board of generic type, in your 286 or 386 system. 3b2, though I recall someone giving one of those away recently The vendor name is repc_auctions. If this was discussed here and I missed it, I'm still running days behind in getting all emails of the discussion group. Jim

21 years

Looking for: BCC180 schematics and..

by ajp166＠bellatlantic.net

> >Subject: Re: Looking for: BCC180 schematics and.. > From: Scott Stevens <chenmel at earthlink.net> > Date: Wed, 28 Sep 2005 18:39:28 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On Wed, 28 Sep 2005 11:52:50 -0400 >Allison <ajp166 at bellatlantic.net> wrote: > >> I'm looking for schematics for MicroMint BCC180 rev1. >> > >I am too. But MicroMint still sells the Technical Reference and people >here frown on even suggesting anybody share a copy. I'll have to sell something and go buy it then. I am concerned their tech reference is not for Rev1. Allison

21 years

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test-drb September 2005