Search found 2439 matches

by Pernod
Tue Mar 02, 2021 1:26 pm
Forum: 8-bit acorn hardware
Topic: IC Identification
Replies: 6
Views: 278

Re: IC Identification

ChrisJC wrote:
Tue Mar 02, 2021 1:16 pm
For ref, I have in front of me a bunch of mask ROMS.
They all say HN613128. After that:
PB04 is the MOS
PE02 is DNFS
PD11 is View
PB01 is Basic

I don't know how definitive that is.

Chris.
They're all documented at http://mdfs.net/Docs/Comp/BBC/Resources/MaskROM
by Pernod
Tue Mar 02, 2021 12:38 pm
Forum: 8-bit acorn hardware
Topic: BT M2105 Version
Replies: 46
Views: 6589

Re: BT M2105 Version

That boots straight into the terminal but starts printing out spurious characters before repeatedly clearing the screen and complaining about "Voice Response Unavailable". Those characters are probably for troubleshooting purposes, but aren't documented to know what they mean. I believe i...
by Pernod
Tue Mar 02, 2021 1:47 am
Forum: 8-bit acorn hardware
Topic: BT M2105 Version
Replies: 46
Views: 6589

Re: BT M2105 Version

A little more progress on this... added the serial device and via's and put ROMs in different banks. Can you say which banks you put the ROMs into? Also, did you remove the BASIC ROM, or just put the main language ROM into a higher priority bank? I currently have the ROMs in the following banks (do...
by Pernod
Sun Feb 28, 2021 6:38 pm
Forum: 8-bit acorn hardware
Topic: 27256 sized Sideways ROMs
Replies: 1
Views: 108

Re: 27256 sized Sideways ROMs

ChrisJC wrote:
Sun Feb 28, 2021 6:22 pm
Does anyone know what tricks they pulled off to give access to the whole EPROM?
See viewtopic.php?p=218623#p218623
by Pernod
Mon Feb 22, 2021 12:23 pm
Forum: 8-bit acorn hardware
Topic: Voxbox Question
Replies: 20
Views: 2569

Re: Voxbox Question

I have written an Elk emulator with the goal of emulating the setup I had as a kid - as such, it includes (a little crude) Voxbox emulation. So does your emulation actually work? The test case that I'm using is the Alan Partridge game but am yet to get any speech out of it. It does a read then writ...
by Pernod
Sun Feb 21, 2021 9:13 pm
Forum: 8-bit acorn hardware
Topic: Voxbox Question
Replies: 20
Views: 2569

Re: Voxbox Question

That's all just speculation, but what I do know is that the chip is attached to the system bus such that writes between 0xc0c0 and 0xc0ff will signal the chip to emit the allophone who's code is equal to the bottom 6 bits. And once the chip has latched the requested allophone code into it's interna...
by Pernod
Sun Feb 21, 2021 7:11 pm
Forum: 8-bit acorn hardware
Topic: Mystery ROMs
Replies: 7
Views: 331

Re: Mystery ROMs

ChrisJC wrote:
Sun Feb 21, 2021 4:49 pm
OK. here is a bumper crop of ROMs!
There are the four OS92 ROMs, and the TORCH ROM that was beneath them.

Chris.
Thanks, the Torch CPN 0.67 was previously undumped =D> Earliest known was previously CPN 0.71.
by Pernod
Sun Feb 21, 2021 2:25 pm
Forum: 8-bit acorn software: other
Topic: Torch MCP Versions
Replies: 26
Views: 2971

Re: Torch C-Series "label printer"

dsdf323 wrote:
Sun Feb 21, 2021 5:42 am
From what I can make out there's a known Torch MCP 1.01 (CI), a "GCO 3.35K" ... and another where the label has flaked off.

Will dump the ROMs if they are not previously known.
It's actually ECO 3.35K which is basically NFS 3.35, and the one missing the label will likely be a DFS.
by Pernod
Sat Feb 20, 2021 5:57 pm
Forum: 8-bit acorn hardware
Topic: Was there ever a 68000 co-pro for tbe BBC/Master?
Replies: 11
Views: 455

Re: Was there ever a 68000 co-pro for tbe BBC/Master?

BigEd wrote:
Sat Feb 20, 2021 5:48 pm
Interesting. (Is that a Z80 on the Torch board?)
Yes, it's a dual co-processor to retain compatibility with the earlier Torch Z80 boards running CPN.
BigEd wrote:
Sat Feb 20, 2021 5:48 pm
What's the most compelling software one might run on a 68k second processor?
Err, not alot! The Casper has Control 'C' and the Torch has Unix.
by Pernod
Sat Feb 20, 2021 1:59 pm
Forum: 8-bit acorn hardware
Topic: Was there ever a 68000 co-pro for tbe BBC/Master?
Replies: 11
Views: 455

Re: Was there ever a 68000 co-pro for tbe BBC/Master?

I think none of the 68k second processors use a Tube chip, so the idea doesn't fit too well to PiTubeDirect (which uses the Tube connection to the host.) They don't, but the Casper and Torch boards do connect to the Tube socket. The Casper is emulated, it uses 2x6522's instead of the Tube, so shoul...
by Pernod
Sat Feb 20, 2021 1:05 pm
Forum: archive requests
Topic: ROMs for BeebFlex and CMS 6809 2nd Processor
Replies: 17
Views: 1054

Re: ROMs for BeebFlex and CMS 6809 2nd Processor

That makes sense, otherwise the OS may think there's an Acorn tube device attached when reading &FEE0, and try to get it to return a start-up banner.
by Pernod
Sat Feb 20, 2021 2:33 am
Forum: archive requests
Topic: ROMs for BeebFlex and CMS 6809 2nd Processor
Replies: 17
Views: 1054

Re: ROMs for BeebFlex and CMS 6809 2nd Processor

The CMS board is accessed in the address range &FEF0-&FEFF, could you do a quick test and let me know what &FEE0-&FEEF returns when the board is connected?
FORI%=0TO31:PRINTI%?&FEE0:N.
by Pernod
Sat Feb 20, 2021 12:35 am
Forum: 8-bit acorn software: other
Topic: Acornsoft P-System
Replies: 57
Views: 5774

Re: Acornsoft P-System

So, I checked my old emails and Johan did indeed send me two disk images but I discarded the second one as it wouldn't boot and I just assumed that it was corrupt. However, with help from Bruce/bleister, I've learned how to list the P-System filesystem and that seems to be okay on both disks. Could...
by Pernod
Fri Feb 19, 2021 8:37 pm
Forum: 8-bit acorn hardware
Topic: Mystery ROMs
Replies: 7
Views: 331

Re: Mystery ROMs

ChrisJC wrote:
Fri Feb 19, 2021 8:30 pm
Does the board or ROM contents have any historical value? (I could read the ROMs as I have an EPROM programmer).

Chris.
Yes please. We already have an image of OS 0.92, don't remember where it came from, but would be good to compare with another source.
by Pernod
Fri Feb 19, 2021 2:43 pm
Forum: archive requests
Topic: ROMs for BeebFlex and CMS 6809 2nd Processor
Replies: 17
Views: 1054

Re: ROMs for BeebFlex and CMS 6809 2nd Processor

monkeyman79 wrote:
Fri Feb 19, 2021 2:23 pm
Nice. Good job! =D>
Is your emulation code available on github?
It'll be in MAME when I submit it later today, at https://github.com/mamedev/mame/blob/ma ... ms6809.cpp. The next release is expected next week.
by Pernod
Fri Feb 19, 2021 12:17 pm
Forum: archive requests
Topic: ROMs for BeebFlex and CMS 6809 2nd Processor
Replies: 17
Views: 1054

Re: ROMs for BeebFlex and CMS 6809 2nd Processor

As for using: When you start the CMSFlex ROM with board connected, it switches to mode 3 and displays CMS > prompt. From there, f1 displays help, f0 allows enter OSCLI command (e.g. exit to basic), ctrl+f boots from ROM, U <drive> boots from floppy. This was invaluable info about the function keys....
by Pernod
Thu Feb 18, 2021 9:20 pm
Forum: archive requests
Topic: ROMs for BeebFlex and CMS 6809 2nd Processor
Replies: 17
Views: 1054

Re: ROMs for BeebFlex and CMS 6809 2nd Processor

Regarding 6809 ROM - the only ROM area on 6809 is E000-FFFF. I transferred that to BBC and saved to file, and checked in hex that it looks good (including last byte). Thanks, looks good, now the fun starts putting the pieces together in emulation. Could you just verify the crystal used on the board...
by Pernod
Thu Feb 18, 2021 8:12 pm
Forum: archive requests
Topic: ROMs for BeebFlex and CMS 6809 2nd Processor
Replies: 17
Views: 1054

Re: ROMs for BeebFlex and CMS 6809 2nd Processor

monkeyman79 wrote:
Thu Feb 18, 2021 7:49 pm
I will try to transfer the 6809 ROM contents to BBC without removing it physically, but it will take me some time to figure it out.
Not sure if that would be possible. How did you dump the CMSFlex?
by Pernod
Thu Feb 18, 2021 7:28 pm
Forum: archive requests
Topic: ROMs for BeebFlex and CMS 6809 2nd Processor
Replies: 17
Views: 1054

Re: ROMs for BeebFlex and CMS 6809 2nd Processor

Pictures of CMS 6809 2nd Processor: IMG_20210218_193846.jpg IMG_20210218_193918.jpg Floppy (it was labeled "DIAS Flex", whatever DIAS stands for): DiasFlex.zip BBC ROM: CMSFlex.zip Thanks for those. I wasn't expecting a 16K ROM for CMSFlex, but looks good. The similar BeebFlex ROM from Co...
by Pernod
Thu Feb 18, 2021 5:39 pm
Forum: introduce yourself
Topic: Greetings from Poland
Replies: 6
Views: 170

Re: Greetings from Poland

The BBC is also equipped with a working 6809 coprocessor board with ROM for it (CMS Flex 29/8/84). I even managed to copy the few Flex disks which have non-standard format (sectors are numbered starting from 1 and continue on second side) to HFE files. Welcome! I'd like to know more about the CMS68...
by Pernod
Wed Feb 17, 2021 9:18 pm
Forum: 8-bit acorn hardware
Topic: 80 column teletext
Replies: 34
Views: 5155

Re: 80 column teletext

The processor is a 6803, not a 6502 so emulation may be trickier. It would also be hard without more knowledge of the hardware. Of course it someone has a maintenance manual I'd be very interested! I'm reluctant to post the code as I'm not sure who owns the copyright. I doubt anyone would be upset ...
by Pernod
Wed Feb 17, 2021 7:44 pm
Forum: 8-bit acorn hardware
Topic: 80 column teletext
Replies: 34
Views: 5155

Re: 80 column teletext

I realise this is an old thread, but I came across something that may be of interest. It's an ELF Mini-Terminal, of relevance here because it has a video system similar to that of a BBC Microcomputer in mode 7. Like the BBC, it uses a 6845 and a SAA5055. It is capable of both 40 and 80 column modes...
by Pernod
Wed Feb 17, 2021 5:54 pm
Forum: 8-bit acorn hardware
Topic: Torch ROMS
Replies: 7
Views: 146

Re: Torch ROMS

I was a little surprised to see that my dump and the file here http://mdfs.net/System/ROMs/Torch/CCCPN102 are different. either i dont know how to download a file or the one on mdfs,net is corrupt with regular runs of 32 bytes set to zero. Your dump is good, the mdfs.net download is definitely corr...
by Pernod
Wed Feb 17, 2021 1:14 pm
Forum: past weeknight 'general' acorn sessions
Topic: Weekday 'Virtual' General session #17, Tuesday 16th February 2021, 7pm - 10pm (GMT)
Replies: 10
Views: 163

Re: Weekday 'Virtual' General session #16, Tuesday 2nd February 2021, 7pm - 10pm (GMT)

BigEd wrote:
Wed Feb 17, 2021 11:40 am
Phil M too! And Nigel was there, I think.
Yep, was there most of the time.
by Pernod
Mon Feb 15, 2021 4:34 pm
Forum: 8-bit acorn software: other
Topic: Identify ROM XBL 2.2
Replies: 5
Views: 177

Re: Identify ROM XBL 2.2

rharper wrote:
Mon Feb 15, 2021 3:58 pm
Here is the ROM zipped.
Ray
I'd guess it's from a printer.
by Pernod
Sun Feb 14, 2021 7:07 pm
Forum: 8-bit acorn hardware
Topic: Unknown hardware found on BBC Micro Circuit Board
Replies: 3
Views: 225

Re: Unknown hardware found on BBC Micro Circuit Board

Not much is known about these boards so if you find any documentation for it then it would be nice to see it scanned.
by Pernod
Sun Feb 14, 2021 6:57 pm
Forum: 8-bit acorn software: other
Topic: Identify ROM XBL 2.2
Replies: 5
Views: 177

Re: Identify ROM XBL 2.2

rharper wrote:
Sun Feb 14, 2021 6:31 pm
I have saved a rom image but the only contents I recognize are DRAFT, COURIER, PRESTIGE, ORATOR, SCRIPT & OPTION LQ, so related to a word-processor of some kind.
Ray
Post it here and I'll take a look.

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