Search found 946 matches

by Kazzie
Thu Nov 14, 2019 9:55 am
Forum: acorn atom and system
Topic: Looking for System 1 software
Replies: 10
Views: 469

Re: Looking for System 1 software

I've been messing around with generating WAVs from assembler output using minimodem. I think it should work, but I cannot test it as my System 1 has a fault in the cassette circuitry which I'm still trying to chase down. Please could someone try loading this (rather minimal) test program? It just p...
by Kazzie
Sun Nov 10, 2019 5:20 pm
Forum: introduce yourself
Topic: Hello and help me fix my beeb
Replies: 8
Views: 291

Re: Hello and help me fix my beeb

Is your DFS ROM an EPROM or a mask ROM? It's possible that your ROM may be partially corrupted, such that a bit somewhere in the executable code sends the machine hanging when it tries to talk with the 8271, but the strings in the ROM that are queried by the *HELP command aren't affected. That'd be ...
by Kazzie
Fri Nov 08, 2019 7:54 am
Forum: introduce yourself
Topic: Hello from Keynsham!
Replies: 13
Views: 332

Re: Hello from Keynsham!

Welcome on board!

Your Nintendo/Sony collection sounds a bit like the Nintendo/Sega collection in my house. :) There's a thread where others have shared their kit-accumulating confessions here.
by Kazzie
Thu Nov 07, 2019 7:49 am
Forum: introduce yourself
Topic: Hello and help me fix my beeb
Replies: 8
Views: 291

Re: Hello and help me fix my beeb

Hello, and welcome. My Beeb is currently away visiting friends, so I can't open mine up and experiment on mine myself at the moment. But here are a few thoughts... There's a thread here of an individual who had a similar prompt displayed at boot; their issue was that link 4 on the keyboard was made ...
by Kazzie
Mon Nov 04, 2019 7:40 am
Forum: introduce yourself
Topic: Beeeeee-Beep!
Replies: 11
Views: 232

Re: Beeeeee-Beep!

tricky wrote:
Sun Nov 03, 2019 11:25 pm
Welcome, I'm sure lots of us are eager to hear more about the contents of my attic.
No need to be competitive, I'd like to hear about the contents of both of your attics! ;)
by Kazzie
Sun Nov 03, 2019 3:09 pm
Forum: software: classic games
Topic: Choosing games for a retro-gaming session
Replies: 16
Views: 294

Re: Choosing games for a retro-gaming session

Dunjunz doesn't need sideways RAM to run. I guess you were looking at an enhanced version? But it does need DFS 0.9: https://stardot.org.uk/forums/viewtopic.php?f=3&t=16227#p223698 Thanks for the corrections. I'd stumbled across this version . Blowing a new DFS ROM is far more straightforward! Edit...
by Kazzie
Sun Nov 03, 2019 1:52 pm
Forum: software: classic games
Topic: Choosing games for a retro-gaming session
Replies: 16
Views: 294

Re: Choosing games for a retro-gaming session

Thanks for all the suggestions. I'd looked at a few "Top x" threads, but the trouble is I'm unfamiliar with most of them, and want games that people could pick-up and get a taste for quickly. To take one counter-example, I know that Exile is very highly-regarded, but it takes some time to get into. ...
by Kazzie
Sun Nov 03, 2019 8:00 am
Forum: hardware
Topic: New A3000 owner - dumb questions
Replies: 12
Views: 382

Re: New A3000 owner - dumb questions

That's looking nice and tidy, well done. =D>
by Kazzie
Sun Nov 03, 2019 7:59 am
Forum: software: classic games
Topic: Choosing games for a retro-gaming session
Replies: 16
Views: 294

Choosing games for a retro-gaming session

In a few weeks, I'm going to be taking my Beeb and a few consoles to a retro gaming session, and I'm wondering what games to bring with it. The intended audience will be university students, studying computing- and engineering-related subjects, but most of them will be younger than the Beeb. I'm loo...
by Kazzie
Sun Nov 03, 2019 5:21 am
Forum: hardware
Topic: Drive Empty - Citizen OSDC-65C
Replies: 5
Views: 188

Re: Drive Empty - Citizen OSDC-65C

Archimedes machines expect a "drive ready" signal on pin 34 of the floppy cable. The floppy drive brings this line low to indicate that it's ready. I suggest you start by checking the cable and the motherboard traces for any damage. (Modern PC drives use pin 34 differently, and send a "disk changed"...
by Kazzie
Sat Nov 02, 2019 6:23 pm
Forum: hardware
Topic: Very dead A3000 (now very much alive)
Replies: 20
Views: 670

Re: Very dead A3000 (now very much alive)

I'm glad you found success, even if I wasn't able to do much more than offer moral support! =D>
by Kazzie
Fri Nov 01, 2019 3:28 pm
Forum: hardware
Topic: Very dead A3000 (now very much alive)
Replies: 20
Views: 670

Re: Very dead A3000

I seem to have lost track of where you got to on this repair project.

How far through the "System failure" tests in the service manual did you get? (Reset signal on IC13 pin 29, RST signal on IC 44 pin 44 and IC 37 pin 9, etc.)
by Kazzie
Thu Oct 31, 2019 3:45 pm
Forum: for sale / freebies
Topic: Acorn Atom software for sale
Replies: 10
Views: 410

Re: Acorn Atom software for sale

Lardo Boffin wrote:
Thu Oct 31, 2019 2:32 pm
poor lonely Soft VDU.
I hope it doesn't take it too hard. :wink:
by Kazzie
Wed Oct 30, 2019 8:22 pm
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 22 to 24 November 2019 - NOW FULL - but accepting names for reserve list
Replies: 97
Views: 3652

Re: ABUG SOUTH 22 to 24 November 2019 - NOW FULL - but accepting names for reserve list

I'd like to hear of any news about its diagnosis, as it's had me stumped (from afar) as to the cause of its problems.
by Kazzie
Wed Oct 30, 2019 7:55 pm
Forum: hardware
Topic: Aleph-1 fun & fault finding
Replies: 5
Views: 276

Re: Aleph-1 fun & fault finding

As for the floppy issues, I've no experience with Goteks, but I know that there are hardware differences between PC and non-PC (Acorn) floppy drive pinouts and control signals, so one would assume there are software differences too; the code will be waiting for different signals/responses from the f...
by Kazzie
Wed Oct 30, 2019 7:44 pm
Forum: hardware
Topic: Aleph-1 fun & fault finding
Replies: 5
Views: 276

Re: Aleph-1 fun & fault finding

Hm, time to dig out my dusty recollections of how DOS and the 286/386 deal with memory... The default arrangement of the original IBM PC (with an 8088/8086 that could address up to 2^20=1024kB of memory) was for up to 640kB of RAM, with the subsequent 384kB of memory space reserved for ROMs in vario...
by Kazzie
Wed Oct 30, 2019 5:49 pm
Forum: hardware
Topic: Master - Hangs on disk command
Replies: 10
Views: 322

Re: Master - Hangs on disk command

It seems that the real 1770 takes the same philosophy as the abandoned intergalactic cruise liner in Douglas Adams' Hitchhiker's Guide. Even though the drive is clearly empty, and has been for several seconds, it believes that "the statistical likelyhood is that one day there will be lemon-soaked pa...
by Kazzie
Wed Oct 30, 2019 5:21 am
Forum: hardware
Topic: Aleph-1 fun & fault finding
Replies: 5
Views: 276

Re: Aleph-1 fun & fault finding

As an initial thought, the two key differences between DOS and Windows are the use of RAM above the 1MB limit, and the use on 386 Protected mode on the CPU. Some initial ideas: Does DOS boot with DEVICE=C:\DOS\HIMEM.SYS in your CONFIG.SYS? If not, does adding the /TESTMEM:OFF option help? Does using...
by Kazzie
Mon Oct 28, 2019 8:11 pm
Forum: general
Topic: Today I received.....
Replies: 5487
Views: 441214

Re: Today I received.....

duikkie wrote:
Mon Oct 28, 2019 7:17 pm
no it is a 6802 chip , yes an other board with chips :)
display says 6802 NANO . but the keypad is different :(
So it's a question of "what kind of 6802-based kit-build / trainer microcomputer is this"? Either way, it's an interesting find.
by Kazzie
Sun Oct 27, 2019 9:15 pm
Forum: general
Topic: Today I received.....
Replies: 5487
Views: 441214

Re: Today I received.....

what is it :) and how to use this smart(phone) device ? what i found on the world wide web so far but not the same :( http://spivey.oriel.ox.ac.uk/corner/Nanocomp_clock http://spivey.oriel.ox.ac.uk/wiki3/images/4/4c/Nanocomp.pdf From the look and labelling of the keypad, I'm thinking it may be a ki...
by Kazzie
Thu Oct 24, 2019 12:21 pm
Forum: hardware
Topic: BBC B Upper memory fault
Replies: 15
Views: 347

Re: BBC B Upper memory fault

Comparing the code of the faulty characters with the code of the character that should be there (from the Mode 7 character set ) can help you identify which chip is faulty. If the faulty characters are always eight values away from the correct character, that would imply that the RAM chip that provi...
by Kazzie
Mon Oct 21, 2019 2:43 pm
Forum: hardware
Topic: New A3000 owner - dumb questions
Replies: 12
Views: 382

Re: New A3000 owner - dumb questions

Multiple drive icons could be due to multiple partitions, or multiple physical drives. Going on a limb and from memory, Acorn's original interfaces didn't officially support them, but modern IDE devices often do. (Back in the day, Oak's ClassROM products would partition a hard drive into system and ...
by Kazzie
Mon Oct 21, 2019 2:27 pm
Forum: upcoming and recent events & exhibitions
Topic: Re: ABUG Canada West Nov 19 2019 Meetup #15
Replies: 6
Views: 283

Re: ABUG Canada West Nov 19 2019 Meetup #15

It's always great to read about what you get up to, but I was disappointed not to find any details about the time machine you used during the event.


(It's still October on my calendar. ;))
by Kazzie
Mon Oct 21, 2019 8:37 am
Forum: hardware
Topic: My new A3010 is up and running. A few questions...
Replies: 8
Views: 240

Re: My new A3010 is up and running. A few questions...

The drive is recognized and shows up as A:, the device itself is seen as a Mitsumi drive, so I think it's the format that's the issue. Either that or a duff drive. Either way, I'm returning it. I feel like Gotek is a good solution, especially as you can keep all the floppy images on the one USB sti...
by Kazzie
Mon Oct 21, 2019 8:15 am
Forum: hardware
Topic: My new A3010 is up and running. A few questions...
Replies: 8
Views: 240

Re: My new A3010 is up and running. A few questions...

From a brief look around the internet, it seems that Windows 10 did not ship with drivers for floppy drives. External floppy drives can still be used with Windows 10, but you need to install the required drivers, either through Windows Update or by getting drivers from the "manufacturer" of the flop...
by Kazzie
Thu Oct 17, 2019 6:37 am
Forum: hardware
Topic: Acquired an A3010 today - help needed
Replies: 64
Views: 1193

Re: Acquired an A3010 today - help needed

stuslayer wrote:
Wed Oct 16, 2019 4:07 pm
Theres plenty of them on ebay at the moment! a couple of low start A3000's
Do they sell free time and house-space too? That's my problem for the forseeable. ;)
by Kazzie
Wed Oct 16, 2019 10:03 am
Forum: hardware
Topic: Acquired an A3010 today - help needed
Replies: 64
Views: 1193

Re: Acquired an A3010 today - help needed

Thanks for the update. I'm glad that you got a solution that works for you.

(One of these days I'm going to buy an A3*** myself for the challenge of repairing it: my A420/1 dodged all serious battery damage because the batteries aren't on the motherboard.)
by Kazzie
Tue Oct 15, 2019 5:03 am
Forum: acorn atom and system
Topic: A Website dedicated to the Acorn System Computers
Replies: 42
Views: 2002

Re: A Website dedicated to the Acorn System Computers

Making a hybrid System 1 / System 5 (2MHz 6502A) card on one eurocard feels like a bit of a stretch, as the latter is markedly different. A universal System 1-4 8154/6522 card would definitely be feasible.
by Kazzie
Mon Oct 14, 2019 8:55 am
Forum: acorn atom and system
Topic: A Website dedicated to the Acorn System Computers
Replies: 42
Views: 2002

Re: A Website dedicated to the Acorn System Computers

Thanks everyone, bprosman has found a rack for me, plus somebody on another Forum has promised me a whole bunch of bits so I should be good to go. I've also scored some parts of ebay so hopefully I should be good to go quite soon. I've started collecting information on dimensions for front plates e...
by Kazzie
Tue Oct 08, 2019 5:49 pm
Forum: hardware
Topic: Announcement : Update on hardware produced by me.
Replies: 22
Views: 2592

Re: Announcement : Update on hardware produced by me.

Thank you very much for the link. My long-ago request for one seems to have dropped between the cracks. I'll be ordering forthwith!