Free to collector

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jonb
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Free to collector

Post by jonb » Sun Feb 17, 2019 12:55 pm

Hi

In my recent haul of stuff I came across what looks like a full set of original Archimedes user manuals, plus a box of Archie disks. There is no Archimedes in the haul so these are not of use to me.

Please come and take them off my hands. No charge, but I won't ship or split. Take it all or not at all.

Location, South Coast near Brighton.

Cheers
JonB

List:

A400 Manuals: Welcome Guide, User Guide (1989)
A1000 Manuals: Welcome, User, Programmers Ref (x2)
ANSI C R3 + Disks
Citizen printer driver + disk
Risk FORTH ref
PC EMULATOR + Disk + DOS boot disk
Book: Archimedes Assembly Language - DABS Press
Set of ARTHUR ROMS
Disks: RISKOS2 Extras, WE HDD utils, Baildon CROSS 32, various FORTH disks (copies)
Last edited by jonb on Sun Feb 17, 2019 1:15 pm, edited 1 time in total.

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kieranhj
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Re: Free to collector

Post by kieranhj » Sun Feb 17, 2019 4:49 pm

jonb wrote:
Sun Feb 17, 2019 12:55 pm
Hi

In my recent haul of stuff I came across what looks like a full set of original Archimedes user manuals, plus a box of Archie disks. There is no Archimedes in the haul so these are not of use to me.

Please come and take them off my hands. No charge, but I won't ship or split. Take it all or not at all.

Location, South Coast near Brighton.

Cheers
JonB

List:

A400 Manuals: Welcome Guide, User Guide (1989)
A1000 Manuals: Welcome, User, Programmers Ref (x2)
ANSI C R3 + Disks
Citizen printer driver + disk
Risk FORTH ref
PC EMULATOR + Disk + DOS boot disk
Book: Archimedes Assembly Language - DABS Press
Set of ARTHUR ROMS
Disks: RISKOS2 Extras, WE HDD utils, Baildon CROSS 32, various FORTH disks (copies)
Hi Jon,

I just got my new A3020 up and running so would be interested in this collection. Whereabouts on the south coast are you? I’m based in Farnham, Surrey but visit Brighton on a semi-regular frequency for the vegetarian restaurants!

Thanks,
Kieran
Bitshifters Collective | Retro Code & Demos for BBC Micro & Acorn computers | https://bitshifters.github.io/

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jonb
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Re: Free to collector

Post by jonb » Sun Feb 17, 2019 5:06 pm

I'll PM you
Last edited by jonb on Sun Feb 17, 2019 5:07 pm, edited 1 time in total.

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robcfg
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Re: Free to collector

Post by robcfg » Sun Feb 17, 2019 6:59 pm

Jon, would you mind dumping the roms?

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jonb
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Re: Free to collector

Post by jonb » Sun Feb 17, 2019 9:19 pm

Depends on the type. I mean, I could, but the document pack is away in a plastic box somewhere. Let me see..

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jonb
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Re: Free to collector

Post by jonb » Fri Feb 22, 2019 11:05 am

Ignore
Last edited by jonb on Fri Feb 22, 2019 11:36 am, edited 1 time in total.

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jonb
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Re: Free to collector

Post by jonb » Fri Feb 22, 2019 11:31 am

robcfg wrote:
Sun Feb 17, 2019 6:59 pm
Jon, would you mind dumping the roms?
I've had a look and I do not think I can dump these ROMs. They appear to be Arthur 1.1 copyright Acorn 1987. I have ROMs 3 and 4 but the other two ROMs do not have Arthur written on them. One of them says Acorn 1987 and 0277-023-03.

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jonb
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Re: Free to collector

Post by jonb » Fri Feb 22, 2019 11:32 am

They are 28 pin mask ROMs. I can read some data from them if I tell my programmer they are 27512 EPROMS, but is that the correct equivalent?

If so, I can dump them. Please advise.


2A8B7A8B-4729-463C-AE5A-9B7FD67F1802.jpeg
Maybe this will help identify them?
Last edited by jonb on Fri Feb 22, 2019 11:35 am, edited 2 times in total.

steve3000
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Re: Free to collector

Post by steve3000 » Fri Feb 22, 2019 7:25 pm

jonb wrote:
Fri Feb 22, 2019 11:31 am
They appear to be Arthur 1.1 copyright Acorn 1987.
Interesting, I've not seen Arthur v1.1... v0.3 and v1.2 are the commonly available versions, I wonder if v1.1 is a misprint and they are really v1.2...

They're probably 128kb ROMs (assuming Arthur was 512kb?). But if you can read 64kb max, give it a try and post up the four images, they'll look like nonsense until combined, as they're striped 4x8bits to make 32bit words.

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Re: Free to collector

Post by joachim » Fri Feb 22, 2019 8:46 pm

Agreed those are 128kB roms. The type numbers (531000, 831000, 231024) end in "1000" or "1024" most likely signifying 1Mbit = 128kB, and Google search for those numbers and "rom" appears to confirm that.

(Also, here are some people talking about dumping similar 128kB roms using an EPROM programmer: https://rec.games.video.arcade.collecti ... -mask-roms. I have not verified that their pinout is the same as yours, so consider this link to be for general inspiration purposes only.)
Last edited by joachim on Fri Feb 22, 2019 11:28 pm, edited 2 times in total.

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jonb
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Re: Free to collector

Post by jonb » Sat Feb 23, 2019 7:42 am

Yes, I found that link, read it, and thought "can't be bothered". My programmer doesn't support any of the alternative ROM types listed and I am not prepared to build an adapter for it - no time right now. Instead I have read them using settings for a 27512 EPROM and the results are attached. See if you can make sense of them...


Arthur v1.1 ROMS.zip
The Holy Grail of Arthurian Legend?
(162.78 KiB) Downloaded 8 times
Last edited by jonb on Sat Feb 23, 2019 7:42 am, edited 1 time in total.

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Re: Free to collector

Post by steve3000 » Sat Feb 23, 2019 8:30 am

Thanks Jon - I've downloaded and tested, and can confirm those are byte-for-byte identical to Arthur 1.2 ROMs (well the first 64kb of each), and includes the version string "Arthur 1.20 (25 Sep 1987)".

And yes - they should be 128kb each, so you only have half the code dumped, as expected.

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1024MAK
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Re: Free to collector

Post by 1024MAK » Sat Feb 23, 2019 10:55 am

steve3000 wrote:
Sat Feb 23, 2019 8:30 am
Thanks Jon - I've downloaded and tested, and can confirm those are byte-for-byte identical to Arthur 1.2 ROMs (well the first 64kb of each), and includes the version string "Arthur 1.20 (25 Sep 1987)".

And yes - they should be 128kb each, so you only have half the code dumped, as expected.
Steve, I presume that a copy of the Arthur 1.20 ROMs is already available?

Mark

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robcfg
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Re: Free to collector

Post by robcfg » Sat Feb 23, 2019 11:02 am

I’d try dumping the second half just in case.

Being mask roms it’s quite unusual for them to be mislabelled.

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1024MAK
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Re: Free to collector

Post by 1024MAK » Sat Feb 23, 2019 11:20 am

Cutting and pasting from the linked page from an earlier post...

Code: Select all

....+--------------+
A15.|1....+--+...28|.VCC
A12.|2...........27|.A14
.A7.|3...........26|.A13
.A6.|4...........25|.A8
.A5.|5...........24|.A9
.A4.|6...........23|.A11
.A3.|7.RP231024..22|.A16 (would be /OE VPP on a 27x512)
.A2.|8...........21|.A10
.A1.|9...........20|./CE
.A0.|10..........19|.D7
.D0.|11..........18|.D6
.D1.|12..........17|.D5
.D2.|13..........16|.D4
GND.|14..........15|.D3
....+--------------+
[This information was proudly swiped from the GIICM and hand edited by
Lord_Nightmare]


If that diagram is correct (edit2: it IS correct), you can dump the rom by
putting a socket on the rom reader with pin 22 chopped off of the socket,
then plug the eprom into that socket. Then run a wire from GND (pin 14) to
pin 22 on the rom, and read it as a 27c512, and you'll get the first half of
the rom. then remove the wire and run a wire from pin 22 on the rom to VCC
(pin 28) and read the rom as a 27c512 again, and you'll get the second rom
half.

Edit2: I just found the 27c301 pinout. its the same as the 27010 pinout but
with A16 and /OE swapped. What this means is that the diagram above is
verified to be correct, and the instructions I gave WILL WORK.
so go DUMP that rom! :)

Lord Nightmare
So either bending pin 22 out, or using a slightly modified socket would do along with a jumper wire would do it.

Mark

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jonb
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Re: Free to collector

Post by jonb » Sat Feb 23, 2019 2:11 pm

Tell you what Mark, I'll send you the ROMs. I'm not interested in Archimedes stuff and I have too many other projects on the go at the moment. If you'd care to PM me your address...

Cheers
JonB

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Re: Free to collector

Post by steve3000 » Sat Feb 23, 2019 11:19 pm

1024MAK wrote:
Sat Feb 23, 2019 10:55 am
Steve, I presume that a copy of the Arthur 1.20 ROMs is already available?
Yes, v1.2 is the 'usual' version of Arthur you find lying around - the earlier versions were, I understand, on EPROM and part of the upgrade to v1.2 requirement was to return the original EPROMs. Arthur v1.2 (and v0.3 I think) is available on the riscos.com paid-for download of classic RISC OS ROMs...
robcfg wrote:
Sat Feb 23, 2019 11:02 am
Being mask roms it’s quite unusual for them to be mislabelled.
True, but as I recall Arthur was a very rushed delivery, so possibly v1.1 was planned for release, but last minute code update took place and someone forgot to tell the manufacturer to update the label...

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BigEd
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Re: Free to collector

Post by BigEd » Sun Feb 24, 2019 8:30 am

(Is it possible they are not mask ROMs but one-time-programmable, UV-EEPROMs without the window, so they could be labelled in advance of being programmed, and then with the update to v1.2 any not-yet-programmed-but-already-labelled parts would be programmed with the new code, and turn out to be mislabelled? Sounds like a LOLRARE situation.)

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jonb
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Re: Free to collector

Post by jonb » Sun Feb 24, 2019 8:45 am

Darn it, and I gave them away to Mark!

I could've retired in those!

:lol:

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