Search found 90 matches

by egel
Thu Feb 11, 2021 1:04 pm
Forum: 8-bit acorn hardware
Topic: suprstar on BBC Master 512 horizontal screen sync
Replies: 0
Views: 114

suprstar on BBC Master 512 horizontal screen sync

I have Suprstar (and GoBBC) working on my BBC Master 512, but when go back from the Suprstar environment to the Dos plus environment there is something wrong with the horizontal alignment. The bottom goes diagonally to the right. I think the horizontal sync is lost. I can get it back if I reset the ...
by egel
Tue Feb 09, 2021 12:00 am
Forum: 8-bit acorn hardware
Topic: Capturing Beeb video
Replies: 5
Views: 231

Re: Capturing Beeb video

Yes, it works.
by egel
Wed Sep 02, 2020 12:27 pm
Forum: 8-bit acorn hardware
Topic: Questions for Jon Thackray about the BBC Micro O.S. Rom
Replies: 29
Views: 1731

Re: Questions for Jon Thackray about the BBC Micro O.S. Rom

*.
Where did the idea come from to start OS commands with a * and the idea to shorten OS commands with a . ? And why is *. *cat?
by egel
Mon Jul 13, 2020 10:42 am
Forum: 32-bit acorn hardware
Topic: Acorn AKA20 We32206 Floating Point Co-Processor
Replies: 28
Views: 2119

Re: Acorn AKA20 We32206 Floating Point Co-Processor

TimoHartong wrote: ↑
Sat Feb 29, 2020 9:49 am
It would fit nicely in my R140 :D .
You can borrow it sometime. I'd like to see it work.
by egel
Mon Jul 13, 2020 10:39 am
Forum: 32-bit acorn hardware
Topic: R260 - missing CPU card?
Replies: 30
Views: 2110

Re: R260 - missing CPU card?

Trisomie21 wrote: ↑
Sun Jul 12, 2020 11:17 pm
egel wrote: ↑
Sat Jul 04, 2020 11:30 pm
A R260 keyboard looks like this:
overzicht.jpgdetail.jpg
I sadly only have the keyboard
Do you want to sell the keyboard? πŸ€”
Only if you have an R260 with a missing keyboard and you have an A3xx or A4xx keyboard for me. Otherwise I wil have a machine without a keyboard. :D
by egel
Fri Jul 10, 2020 8:42 am
Forum: 32-bit acorn hardware
Topic: RISCPC Power Supply Refurbish - 4 Kits Available
Replies: 54
Views: 3181

Re: RISCPC Power Supply Refurbish

The only thing I've ever replaced in a Risc-PC PSU is the Schottky Barrier Rectifier. I miss that on the list. That part is heavily under dimensioned, but possibly only in the 70W version.
by egel
Tue Jul 07, 2020 3:54 pm
Forum: 8-bit acorn emulators
Topic: Model Master 128+Acorn Z80 Second Processor
Replies: 30
Views: 2195

Re: Model Master 128+Acorn Z80 Second Processor

viewtopic.php?f=32&t=17150

Jonathan Harston solution for a cp/m harddisk is slow and somewhat unstable.
by egel
Sat Jul 04, 2020 11:30 pm
Forum: 32-bit acorn hardware
Topic: R260 - missing CPU card?
Replies: 30
Views: 2110

Re: R260 - missing CPU card?

That looks like the right keyboard to me? Looks like the keyboard that came with my A540. I guess the RISCiX models could have been different, but seems unlikely. Matches the picture in the brochure - http://chrisacorns.computinghistory.org.uk/docs/Acorn/Brochures/Acorn_APP480_R260.pdf edit: actual...
by egel
Tue Jun 30, 2020 10:11 pm
Forum: 8-bit acorn hardware
Topic: VIDEONULA questions
Replies: 41
Views: 2528

Re: VIDEONULA questions

Will a VideoNuLA fit next to an ATPL Sidewise ROM board? From what I can see it will be very tight. p1030777.jpg Yes it fits. It's on the same level now. A challenge is to lay the fly-lead in such a way that the big yellow spring clip falls between the small chips so that the Sidewise ROM board fit...
by egel
Tue Jun 30, 2020 9:53 am
Forum: 8-bit acorn hardware
Topic: Model B+ boot problems
Replies: 13
Views: 807

Re: Model B+ boot problems

Have you checked the keyboard cable? Is it in the right place? Shifted one place gives weird effects.
by egel
Sat Jun 27, 2020 10:11 pm
Forum: 8-bit acorn hardware
Topic: Acorn Electron Plus 3 are they collectable
Replies: 44
Views: 2614

Re: Acorn Electron Plus 3 are they collectable

acorndave wrote: ↑
Sat Jun 27, 2020 8:07 pm
One bundled with an Elk here for Β£425 !!!

Personally think that's very ambitious

https://www.ebay.co.uk/itm/New-BBC-Acor ... SwBO1eHmDH
But the seller thinks it is a hard drive unit.
by egel
Wed Jun 24, 2020 12:22 pm
Forum: introduce yourself
Topic: here is a new frog challenger
Replies: 21
Views: 2044

Re: here is a new frog challenger

That is like an Olivetti Prodest PC128S emulating an Olivetti Prodest PC128. That sounds easier than it is.
by egel
Tue Jun 23, 2020 12:47 pm
Forum: 8-bit acorn hardware
Topic: TOP 5 interest of the RASP PI CO PRO ?
Replies: 71
Views: 3868

Re: TOP 5 interest of the RASP PI CO PRO ?

drfloyd wrote: ↑
Tue Jun 23, 2020 12:10 pm
DOS... i can run lot of MSDOS game ????? If yes, perhaps....
Not a lot of DOS games.

But there are other uses, you can also use a Raspberry Pi, with an other levelshifter, as a hard disk controller and some other things (Pi1Mhz) or as an RGB to HDMI converter.
by egel
Fri Jun 19, 2020 7:30 pm
Forum: 8-bit acorn hardware
Topic: BBC MASTER 128 Vs 512 ?
Replies: 9
Views: 716

Re: BBC MASTER 128 Vs 512 ?

Does it read natively MSDOS? No, it runs Dos Plus. That is a DOS emulation on top of CP/M-86 writen by Digital Research. It can run some MS-DOS 2 and CP/M programs. The graphics are almost CGA, no brown but yellow. But it can do this, what no other CGA-only machine can: 90427468_3304394452906052_26...
by egel
Tue Jun 16, 2020 10:40 am
Forum: 8-bit acorn hardware
Topic: TURBO MMC or GOTEK ?
Replies: 58
Views: 3072

Re: TURBO MMC or GOTEK ?

What about a hardisk ? (I read for exemple that DOOM perhaps need a Harddisk as the files are big) What is the solution to simulate harddisk ? More or less real harddisks are: There's BeebSCSI or BeebSCSI via RPi or SCSI Host Adaptor (again, based on BeebSCSI design) to hook up to more modern SCSI ...
by egel
Tue Jun 16, 2020 10:12 am
Forum: 8-bit acorn hardware
Topic: VIDEONULA questions
Replies: 41
Views: 2528

Re: VIDEONULA questions

That's interesting. My ATPL Sidewise has worked the contacts loose in the ADC socket, and yesterday I sat a set of dual-wipe sockets inbetween the Sidewise and the motherboard to improve the electrical contact until I get the soldering iron out, and I still managed to fit the keyboard and case on. ...
by egel
Mon Jun 15, 2020 7:01 pm
Forum: 8-bit acorn hardware
Topic: VIDEONULA questions
Replies: 41
Views: 2528

Re: VIDEONULA questions

Will a VideoNuLA fit next to an ATPL Sidewise ROM board? From what I can see it will be very tight. Not next to but it should fit *under* the ATPL board. You may want to raise the ATPL board up a little by using a couple of sockets just to be absolutely sure of clearance. I include one turned pin s...
by egel
Mon Jun 15, 2020 1:22 pm
Forum: 8-bit acorn hardware
Topic: VIDEONULA questions
Replies: 41
Views: 2528

Re: VIDEONULA questions

Will a VideoNuLA fit next to an ATPL Sidewise ROM board? From what I can see it will be very tight.
by egel
Mon Jun 15, 2020 10:06 am
Forum: wanted
Topic: Millipede AlphaLock software
Replies: 4
Views: 634

Re: Millipede AlphaLock software

Which Paul should I contact?
I've tried to contact Q3D/Riscos.com, but haven't received a reply.
by egel
Fri Jun 05, 2020 1:57 pm
Forum: 8-bit acorn software: other
Topic: What was 'Microtext'?
Replies: 3
Views: 493

Re: What was 'Microtext'?

by egel
Tue Jun 02, 2020 7:12 pm
Forum: 32-bit acorn hardware
Topic: Mouse and keyboard
Replies: 7
Views: 561

Re: Mouse and keyboard

acorndave wrote: ↑
Tue Jun 02, 2020 6:38 pm
There's a pic here

https://www.iconbar.com/hardware/iyonix ... g/bits.jpg
Direct linking to an image file is not allowed, but the image is somewhere on this page:

https://www.iconbar.com/forums/viewthre ... newsid=919
by egel
Tue Jun 02, 2020 1:12 pm
Forum: 8-bit acorn hardware
Topic: Pi1MHz Software
Replies: 39
Views: 2497

Re: Pi1MHz Software

dp11 wrote: ↑
Sun May 31, 2020 12:17 pm
DSI won't work currently , it might be possible.
Would composite also be possible? And not to much work?
by egel
Tue Jun 02, 2020 12:16 pm
Forum: archive requests
Topic: Essential Software Master 512 Utilities
Replies: 1
Views: 466

Re: Essential Software Master 512 Utilities

Some but not all were attached in a crippled version with the Master 512 Technical Guide published by Dabs Press
http://www.cowsarenotpurple.co.uk/bbcco ... s-disc.zip
by egel
Sun May 31, 2020 11:46 am
Forum: 8-bit acorn hardware
Topic: Pi1MHz Software
Replies: 39
Views: 2497

Re: Pi1MHz Software

dp11 wrote: ↑
Sat May 30, 2020 8:39 pm
Only Pizero kernel.img at the moment . I'll do a full build soon.
Will a DSI connected LCD display also work, like the Raspberry Pi Touch Display?
by egel
Sat May 30, 2020 7:35 pm
Forum: 8-bit acorn hardware
Topic: Pi1MHz Software
Replies: 39
Views: 2497

Re: Pi1MHz Software

Lardo Boffin wrote: ↑
Sat May 30, 2020 4:22 pm
Interesting sounding project! What hardware is required to connect the Pi to the 1MHz bus? Obviously a level shifter of some sort but what are the specifics?
Thanks!
viewtopic.php?f=3&t=18513
by egel
Wed May 27, 2020 11:54 am
Forum: archive requests
Topic: Euclid manual
Replies: 18
Views: 1591

Re: Euclid manual

eelco108 wrote: ↑
Thu May 21, 2020 11:10 am
The 1989 version of the manual does mention RISC OS, so my guess would be that is was written with RISC OS 3 in mind (no version number mentioned anywhere).
It was more likely with RISC OS 2 in mind. RISC OS 2 was called RISC OS before RISC OS 3 came out in 1991.
by egel
Thu May 21, 2020 2:26 pm
Forum: archive requests
Topic: Essential Software Master 512 Utilities
Replies: 1
Views: 466

Essential Software Master 512 Utilities

Essential Software made some nice programs for the Master 512. Some you can find at http://www.cowsarenotpurple.co.uk/bbccomputer/master512/software.html , but has someone archived the rest somewhere? According to the Master 512 Technical Guide these should exist too: * Printscreen Utilities: GRDUMP...
by egel
Sun May 10, 2020 12:39 pm
Forum: 8-bit acorn hardware
Topic: Pi1MHz future supported devices
Replies: 15
Views: 1185

Re: Pi1MHz future supported devices

Some other wild ideas:

Add more members of the family? like the Hybrid Music 2000

Network? viewtopic.php?f=3&t=16565

Video Digitiser? a Pi can have a camera

mouse ?

USB harddisk ?
by egel
Fri May 08, 2020 4:27 pm
Forum: 8-bit acorn hardware
Topic: Collecting (historical) uses for second processors
Replies: 10
Views: 791

Re: Collecting (historical) uses for second processors

from http://www.cowsarenotpurple.co.uk/bbccomputer/master512/compatibility-info.pdf SOFTWARE THAT SHOULD WORK ON THE MASTER 512 (ISSUE 10) TITLE VER. SUPPLIER COMMENT Ability 1.2 Migent Except Comms & tutor Ability Plus Migent Except Comms & tutor Accountant 1.0 Sage Some colour problems Acc...

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