test-drb

test-drb@ccmp.vtda.org

101090 discussions

by cfandt＠netsync.net

Hey folks! I got this from the Heath reflector I am subscribed to. I already have an H8 that I built back in '83 so one of you should get it. I believe the SS-9000 Ron refers to is a Heathkit communications receiver (shortwave rcvr.) which can be controlled by computer. Have to check my old Heathkit catalog file on this. Email Ron directly. >Date: Thu, 22 Oct 1998 14:49:43 -0400 >Reply-To: Ronald Oxley <rtoxl(a)ANDREWS.EDU> >Sender: Heathkit Owners and Collectors List <HEATH(a)LISTSERV.TEMPE.GOV> >From: Ronald Oxley <rtoxl(a)ANDREWS.EDU> >Subject: H8 computer >Comments: cc: heathkit(a)qth.net >To: HEATH(a)LISTSERV.TEMPE.GOV >X-UIDL: 9c2d5417934b901b38c6fc24968d3523 > >For Sale: > >Heathkit H8 computer system. Includes computer, disk drive, terminal, >printer and software. Included with software is program for controlling >SS-9000 transceiver. Make offer if interested. > >73, >Ron, WM8Z > >--- --- --- --- --- --- --- --- --- --- --- --- --- -- >To subscribe: listserv(a)listserv.tempe.gov >and in body: subscribe HEATH yourfirstname yourlastname >To unsubscribe: listserv(a)listserv.tempe.gov >and in body: signoff HEATH >Archives for HEATH: http://www.tempe.gov/archives >--- --- --- --- --- --- --- --- --- --- --- --- --- -- > Regards, Chris -- -- Christian Fandt, Electronic/Electrical Historian Jamestown, NY USA cfandt(a)netsync.net Member of Antique Wireless Association URL: http://www.ggw.org/freenet/a/awa/

27 years, 10 months

Lisa 2 or 2/5 I/O board wanted

by eric＠brouhaha.com

I'm looking for a Lisa 2 or 2/5 I/O board. That's the version of the board with the nicad battery pack; the 2/10 I/O board did not have the battery or supporting electronics. Actually I'd be interested in any spare Lisa parts at all, working or not. Cheers, Eric

27 years, 10 months

L-DOS

by fauradon＠pclink.com

>> >I loved LDOS. It is my second-favourite 8 bit OS. My favourite (of >> >course) is OS-9. >> > >> >-tony >> > >> You've got to be a real masochist or something, I HAVE TO work with it and >> I'd give it away for any other OS. Unless you're talking about the COCO >> version which I heard was pretty good for the platform it was intended; OS-9 > >Note I said '8 bit OS'. That rules out OS9-68K, etc. I was refering to >the original 6809 version which is pretty darn good. Yes the it fits the description of being 20 years old and 10 years ahead (loosely:) > >-tony >

27 years, 10 months

TRS-80 emulators

by roblwill＠usaor.net

Actually, Tim Mann's TRS-80 page is where I got the disk images. I was going to get xtrs, but I don't have Linux (nor do I have the money to get it). I have an emulator that'll run in DOS, but won't recognise the file format of the disk image. -- -Jason (roblwill(a)usaor.net) ICQ#-1730318 PS>> I'm also trying to find something that's not shareware (ie: can only emulate Mod I, and can emulate Mod III arfer $45 registration fee). ---------- > From: Tony Duell <ard(a)p850ug1.demon.co.uk> > To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> > Subject: Re: TRS-80 emulators > Date: Thursday, October 22, 1998 6:59 PM > > For what host? xtrs can emulate the M3, and on a linux machine it will > use physical drives, so presumably you can make disks for your real model > 3. xtrs runs under x on just about any unix machine. > > There may be emulators for other platforms that can do the same. > > A good place to start is Tim Mann's TRS-80 page. Search for that with > your favourite search engine (the URL is not to hand at the moment, alas). > > -tony >

27 years, 10 months

TRS-80 emulators

by roblwill＠usaor.net

For some reason, I thought Linux was like $50, or something. Just forget that comment. I'm downloading it now. -- -Jason (roblwill(a)usaor.net) ICQ#-1730318 > > Bzzzt, Linux is free That means you don't need money to get it. Get it? > > >format of the disk image. > >-- > > -Jason > >(roblwill(a)usaor.net) > > ICQ#-1730318 > >

27 years, 10 months

L-DOS

by fauradon＠pclink.com

>Incidentally, if anyone's interested in LDOS, the source code for (I >think) 6.3.x, along with disk images for the TRS-80 emulators are >availabe from Tim Mann's TRS-80 page. > >I loved LDOS. It is my second-favourite 8 bit OS. My favourite (of >course) is OS-9. > >-tony > You've got to be a real masochist or something, I HAVE TO work with it and I'd give it away for any other OS. Unless you're talking about the COCO version which I heard was pretty good for the platform it was intended; OS-9 is a dinosaur (and I don't mean a lean mean one) To quote one definition I read : OS-9 is a 20 year old OS that is 10 years ahead of it's time (for those who don't get it: it's 10 years outdated relying on reputation) Francois ------------------------------------------------------------- Visit the desperately in need of update Sanctuary at: http://www.pclink.com/fauradon/

27 years, 10 months

TRS-80 emulators

by fauradon＠pclink.com

>Actually, Tim Mann's TRS-80 page is where I got the disk images. I was >going to get xtrs, but I don't have Linux (nor do I have the money to get >it). I have an emulator that'll run in DOS, but won't recognise the file Bzzzt, Linux is free That means you don't need money to get it. Get it? >format of the disk image. >-- > -Jason >(roblwill(a)usaor.net) > ICQ#-1730318

27 years, 10 months

TRS-80 Model 4 I/O ports?

by ard＠p850ug1.demon.co.uk

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27 years, 10 months

64bit data 128Bit address...Re: Building a Z-80 (64bit!!!)

by allisonp＠world.std.com

< > It is good design in my opinion to have your address bus twice as wide With a 128 bit wide data bus for a predominatly byte oriented machine all that means is every memory cycle gets you 16bytes at memory cycle speeds. It's a bus bandwidth saving trick as it effectively can give what ever your word time is to put up another 16bytes. This goes back to the core days when memory was slower than the CPU. The penelty is a whopper when all your doing it altering or writing one byte as you have to resort to RMW (read, modify, write) cycle at memory speeds. The alternate is a lot of word/byte selection logic that can slow things down. With the upper speed of available z80s (z180s180) being 33mhz there is plenty of speed so that it can hurry up and wait for the disk, floppy and user. Allison

27 years, 10 months

Building your own Z80 / performance

by allisonp＠world.std.com

< I have never tho't of the Z80 as a slow processor. I interfaced a Z180 < running at 18 mhz to a VGA board recently and using a C compiler was abl < build a machine that acted essentially like a 80286 running at 10 mhz. Inthe early to most of the 80s I've spent a fair amount of time using 6 or 8mhz z80s to blow the doors off of x86 hardware. The z80 is a better IO machine! < Z80 is a pretty cool platform for building an extremely cheap and modern < network computer since it acts a lot like a 16 bit processor. There's < you can do with it with a relatively minimal effort. The z280 is even better, the enhancements it has are pretty decent and it's faster still. Doing your own design in a FPGA is harder than would first appear. Unless your using a known core things like gate delays (race conditions) can bite you. Also some routing paths can be slower than others so you may get far less than the rated Tpd. Allison

27 years, 10 months

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