You Smart Folks:
Can anyone give me some clues on a minimal set up to program boot ROMs
for IBM PC & AT comps. I want to build DOS & ? boot roms, but I only
have a faint idea where to start.
What's the minimum and what are some good lowend chips to use that can
be easily reused as development goes on??
Thanks,
-Mike
(PS, I don't want to get too far off topic, so please mail me directly,
if poss..)
mallison(a)konnections.com
Thanks
I found this link this morning and thought that it would be of great use to
the group, so here it is:
The Hardware Book
http://www.blackdown.org/~hwb/hwb.html
Welcome to the Hardware Book. Internet's largest free collection of
connector pinouts and cable descriptions. Created and maintained by Joakim
?gren.
-John Higginbotham-
-limbo.netpath.net-
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ken Hall
Kermit(a)talent.com.au
9452 6280
0414 264 065
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
From: John Higginbotham <higginbo(a)netpath.net>
Subject: C-64c probs
>
> I was playing around with the C-64c I picked up last month... It came with
> a 1541 floppy...
>
> I think I have a problem:
Don't believe what those 'other' people say, collecting old computers is
O.K. *grin*
>
> Turn on floppy
> turn on C-64c
> C-64c inits the drive (light blinks, then goes out)
Sounds normal for a 15xx reset...
> insert disk
> type LOAD "$",8
> nothing happens, no drive light, no response from the 64.
>
> What's going on here? Drive misalign? How do I realign? Bad drive? Bad cable?
I'd start with the cables and connectors... Also try loading ,9 10 or
11, it is possible that they rigged that 1541 to be a higher device
number than 8. Have you tried reading the error channel:
10 open 15,8,15,"i0":rem initilize disk (no, this is not a format
command...)
20 input#15,e,e$,t,s:rem read error channel
30 close 15: print e,e$,t,s
if the disk is alive and device 9 it should report something like "0
ok 0 0"
> Anyone have one or two extra 1541 floppy drives they want to sell?
I find them pretty regularly at thrift shops and flea markets for a
fraction of what the shipping would be. I would suggest you hunt about
a bit first.
If you want to brush up on Commodore 8-bit drive usage I have two guides
on-line:
http://www.goldrush.com/~foxnhare/diskbasics.htmlhttp://www.goldrush.com/~foxnhare/loadingbasics.html
Larry Anderson
--
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
Visit our web page at: http://www.goldrush.com/~foxnhare/
Call our Commodore 64 BBS (Silicon Realms 300-2400 baud) at: (209)
754-1363
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
On Sat, 31 Jan 1998 08:32:45 -0800 (PST), Tim Shoppa
<shoppa(a)alph02.triumf.ca> wrote:
>>Either Orange or Blue DEC binders, depending on the upgrade path that
>>the previous owner took.
All of the binders that I have have grey covers.
>>Look for two files of the form DISMT.COM and DISMT2.COM. These
>>will have the definitive list of all files on the official RT-11 V4.00
>>distribution. If you're missing these - or any other files - tell
>>me what media your machine has and I'll get you copies of these and
>>whatever other files you're missing.
Nope, I don't have either of these files. I got 4 RK05 packs with this
system, three of which work. None of these disks have these files on them.
I'd love to get a whole copy of the V4 distribution, if you have it
(since it would match the manuals that I have). Right now, the only media
that my machine has is the RK05 disk packs. I'm looking to get a paper tape
reader/punch, but I haven't been able to find one yet. I'd also like to put
an RX02 (??) dual-floppy on it. Maybe in February, when I go to my Temple
Univ. "supply house."
What interface boards do I need to hang a dual-floppy off of the
PDP-11/34a?
Rich Cini/WUGNET
<nospam_rcini(a)msn.com> (remove nospam_ to use)
ClubWin! Charter Member (6)
MCP Windows 95/Windows Networking
============================================
At 07:35 PM 1/28/98 GMT, you wrote:
>A friend is heavily into classic cars; he says a car depreciates
>typically until it hits a low at about 13 years, after which its'
>value rises. Computers probably do the same pattern although the time
>probably varies. The trick is to know when the machine hits bottom and
>which will go up from there. (If it climbs slowly, there's no hurry)
Not anymore. There's no way all these Pentium systems out today will ever
be worth anything, at least not in 13 years, IMHO. Maybe in about 30 years,
when most have been destroyed will they be truly worth something as an
classic.
-John Higginbotham-
-limbo.netpath.net-
Please, someone help me!
I have acquired, free of charge, a Sage Iv microcomputer circa 1983.
Specification is : 512K RAM, 12MB hard drive, 1 x 5 1/4 inch floppy
drive.
I need help with : Group A/B microswitch settings, cable to connect to
the serial port of an Amiga A600, serial comms settings, and what I am
likely to find on the Sage IV once it's up and running.
So far, it appears sane (Processor light blinks meaningfully) but
without a terminal connection, I'm completely in the dark.
I really would like to get this machine up and running because it was my
dream machine circa 1982/1983, and I lusted after one of these for
years. Unfortunately I couldn't afford the £7,000 price tag
(U.K./British prices - always worse than American prices!) so it
remained a dream - until now!
Anyone with the relevant technical expertise please e-mail me at:
d_w_edwards(a)hotmail.com.
HELP!!!!
Thank you for your time and consideration.
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
< Actually, though, building a Transputer system is pretty easy. I did so
<back in 1989 (so it's not quite a classic). The time from opening the
<data book to having the machine boot was about 30 minutes!. That was
<using bare chips, not TRAMs as well.
Now the transputer is one that I never got to play with but would have
liked to.
Allison
At 21:06 28/01/98 -0700, you wrote:
>I have a Computone 4(?) port card. long 16 bit ISA bus with 4 RJ11
>ports and 2 RJ45 ports.
>Need info on real purpose and uses, jumpers and switches, thanks
I have several Computone still in use.
What I can say:
They are Multiport card used mainly to hook several tty-devices to a
xenix/unix box.
Usually these cards have an external multiport (DB25) small box connected.
In latest version I thnk they used space-saving RJ's
Are you shure they are true RJ11? (or they are DEC RJ with side ?)
????????????????????????????????????????????????????????????????????????????
? Riccardo Romagnoli,collector of:CLASSIC COMPUTERS,TELETYPE UNITS,PHONE ?
? AND PHONECARDS I-47100 Forli'/Emilia-Romagna/Food Valley/ITALY ?
? Pager:DTMF PHONES=+39/16888(hear msg.and BEEP then 5130274*YOUR TEL.No.* ?
? where*=asterisk key | help visit http://www.tim.it/tldrin_eg/tlde03.html ?
? e-mail=chemif(a)mbox.queen.it ?
????????????????????????????????????????????????????????????????????????????
Anyone help this fellow out? If so, please respond directly to him.
Thanks!
-=-=- <snip> -=-=-
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From: "HeVi@rTi" <heviarti(a)cyberhighway.net>
Newsgroups: alt.sys.pdp11
Subject: wanted. PDP 8 or 11/45 /50 /65
Date: Sun, 01 Feb 1998 12:48:20 -0800
Organization: wouldn't you like to know
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Xref: Supernews70 alt.sys.pdp11:2976
looking for pdp-11's in idaho. also after pdp-8's my uncle needs a
smallmainframe, and i figure an 8 or 11 will do the trick...mebbe pop a
few vt-100s on..
heviarti(a)cyberhighway.net
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The Dragon's Cave BBS (Fido 1:343/272)
kyrrin2 {at} wiz<ards> d[o]t n=e=t
"...No matter how hard we may wish otherwise, our science can only describe
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define any of them!..."
