Search found 2475 matches

by BeebMaster
Sun Oct 22, 2017 10:01 am
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

The RISC PC 700 has RISC OS 3.7. Version 1.63 of SCSIMgr would be good to try, but there is no link on that page, and the link to Discinit doesn't work. I'm happy with SCSI2SD at the minute, although multiple partitions on a proper SCSI disc would be good. Thinking about it, Seagate drives probably ...
by BeebMaster
Sat Oct 21, 2017 9:48 pm
Forum: hardware
Topic: RISC-PC Not Working
Replies: 61
Views: 2817

Re: RISC-PC Not Working

Disaster...after 3 days switched off whilst I was playing with the other RISC PC and the Cumana podule it was back to its old ways.

Anyway, it turned out the batteries had gone flat. New batteries in and it's fine.

So there must still be something wrong with the charging circuit I made.
by BeebMaster
Sat Oct 21, 2017 5:39 pm
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

Yes, and you're to blame for importing them!!!!!
by BeebMaster
Sat Oct 21, 2017 3:07 pm
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

SCSI2SD is the answer to all my problems (again)! The problem really is that this Cumana podule isn't much interested in slicing up single volumes into different partitions, but with SCSI2SD I can make different LUNs appear using the same memory card so the podule sees that there are up to 4 separat...
by BeebMaster
Sat Oct 21, 2017 2:11 pm
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

Nope, disaster. Died after exactly 269 files on two occasions, no error just froze up the RISC PC. I think I will have to stick to the partitioning I did earlier and abandon attempts to bend the rules. Could do with being able to try a later version of SCSIFS or SCSIFiler but I can't find anything o...
by BeebMaster
Sat Oct 21, 2017 1:26 pm
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

Mmmm, a bit of a to-do. Using my bigfile method to fill up the space to make sure it all really exists, I found that the last 128K or so doesn't actually exist. If have that much free space and then try to create a much smaller file the free space goes to zero, and any attempt to access that latest ...
by BeebMaster
Sat Oct 21, 2017 11:56 am
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

Now then, here's a little cheat I discovered... Using the "newer" version of Cumana SCSI manager (1.61), you can partition the drive into bigger slices. It warns you that >511MB isn't allowed, but lets you do it. Then when you execute and map it, the "disc not understood" error c...
by BeebMaster
Sat Oct 21, 2017 10:03 am
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

That would be nice, and I can certainly make you one if I don't have one made up already. However I don't have a desktop PC handy to take a SCSI card at the minute, although I could probably cobble something together. I'm trying a different disc just now, although it was previously formatted as a BB...
by BeebMaster
Sat Oct 21, 2017 8:20 am
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

With much experimentation the maximum first partition size I can get is 364.2MB, second is 290.1MB. I can't get a third partition mapped and recognised under any circumstances.

So at least I have 654.3MB available with two partitions rather than the 511MB I could get previously.
by BeebMaster
Fri Oct 20, 2017 7:28 pm
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

I've got it up to 362MB for the first partition so far. It looks to be very specific what you have to do in !SCSIMgr. 1. Dismount the disc or there is a reservation error 2. Adjust partitions as required 3. Do some other operation (such as verify) otherwise an error occurs at the next step 4. Execut...
by BeebMaster
Wed Oct 18, 2017 7:48 pm
Forum: software: other
Topic: Variants of ADFS
Replies: 16
Views: 578

Re: Variants of ADFS

It looks like I have almost had this idea already, but didn't take it as far as trying to copy one disc to another. From an as-yet-unpublished picture set made in March 2014: Here's the SCSI disc connected to the AIV interface AIVSCSI2.jpg And you can even write data via VFS as long as you use OSWOR...
by BeebMaster
Wed Oct 18, 2017 7:37 pm
Forum: software: other
Topic: Variants of ADFS
Replies: 16
Views: 578

Re: Variants of ADFS

Actually I can't remember whether I have had the idea previously of connecting a SCSI drive to the Master AIV SCSI interface and using VFS to read it and use ADFS of whatever flavour to write to whatever is on the 1MHz bus. That would probably work.
by BeebMaster
Wed Oct 18, 2017 7:23 pm
Forum: software: other
Topic: Double carriage return?
Replies: 16
Views: 555

Re: Double carriage return?

This is a bit of a 35-year old puzzle! I tried a few things with WIDTH, LISTO, VDU 28 and VDU23,16 but I couldn't get anywhere near. I even tried keying in a load of trailing spaces, but these are discarded by the interpreter. Unless there are undocumented calls for these keywords which produce the ...
by BeebMaster
Wed Oct 18, 2017 7:44 am
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

It is the same disc that was formerly in the MDFS. It could be partition table confusion arising from that, although I haven't conclusively determined yet that 480MB is the maximum start point for a second partition in the Cumana podule. It's somewhere between 320MB and 480MB, I will narrow it down ...
by BeebMaster
Wed Oct 18, 2017 7:39 am
Forum: hardware
Topic: RISC-PC Not Working
Replies: 61
Views: 2817

Re: RISC-PC Not Working

Usually only teapot, china, tea, kettle etc make it into the holiday suitcase.

It's retained the time dead-on overnight, so I'm going to leave it alone and declare it fixed.

Great news and thanks to everyone for their help!
by BeebMaster
Tue Oct 17, 2017 10:15 pm
Forum: hardware
Topic: RISC-PC Not Working
Replies: 61
Views: 2817

Re: RISC-PC Not Working

I switched it on before I did the latest mod when my triangle double diode doings was still in-situ and the time was absolutely bang on even after nearly 24 hours powered off. We'll see what the next 24 hours brings.
by BeebMaster
Tue Oct 17, 2017 10:09 pm
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

I did test it, using the old *CREATE method to fill up the space, and then if the next file you create can be read back you know that part of the disc can be accessed, etc. until the space is used up. With a bit of experimentation and luck I might able to get a first partition of about 450MB (480MB ...
by BeebMaster
Tue Oct 17, 2017 10:06 pm
Forum: hardware
Topic: RISC-PC Not Working
Replies: 61
Views: 2817

Re: RISC-PC Not Working

I've done that now, working as expected so far...
by BeebMaster
Tue Oct 17, 2017 8:13 pm
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

I've got a little bit further. I can make it recognise two partitions if the first one is small enough, currently 320MB is the biggest size I've got to. It won't let you mount a partition which starts beyond the first 512MB of the drive and whether anything in the second partition beyond the 512MB i...
by BeebMaster
Tue Oct 17, 2017 7:37 pm
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

Relevant bits of ROMMODULES: 1 Podule 1 SCSILog 1.05 Active 2 Podule 1 SCSIDriver 1.03 Active 3 Podule 1 SCSIFS 1.18 Active 4 Podule 1 SCSIFiler 0.32 Active 5 Podule 1 CDFSdriver 2.10 Dormant 6 Podule 1 CDFS 2.10 Dormant 7 Podule 1 CDFSFiler 2.10 Dormant Relevant bits of STATUS: SCSIFSDirCache 255K ...
by BeebMaster
Tue Oct 17, 2017 6:18 pm
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Re: Cumana SCSI Podule Multiple Partitions

It seems I asked the same question in 2014 , and at that time it was concluded that it was generally too ancient to support large drives. However what wasn't really explained at that time was why it will format a large drive and allow it to be partitioned up, but not mount any partition other than t...
by BeebMaster
Mon Oct 16, 2017 9:02 pm
Forum: hardware
Topic: RISC-PC Not Working
Replies: 61
Views: 2817

Re: RISC-PC Not Working

Right then, I had better be doing that post-haste before the whole thing goes up in flames. Which is the positive end of the diode - stripe or non-stripe? I don't know if it's connected to what I've done so far but the clock gained time overnight (5 mins) and also sometimes gains an instant 5 mins o...
by BeebMaster
Mon Oct 16, 2017 9:00 pm
Forum: hardware
Topic: Cumana SCSI Podule Multiple Partitions
Replies: 21
Views: 493

Cumana SCSI Podule Multiple Partitions

I have a Cumana SCSI podule, I use it as a sort of portable podule for backing up Archimedes hard drives. It has a 2GB Seagate 50-pin SCSI drive connected to it. I can't get more than one partition on the drive recognised. With !SCSIMgr, I have formatted the disc, partitioned it as 4 x 511MB parts a...
by BeebMaster
Mon Oct 16, 2017 5:03 pm
Forum: acorn atom
Topic: Acorn Atom Econet
Replies: 14
Views: 540

Re: Acorn Atom Econet

I do have an original Level 2 File Server Master Disc, probably the one referred to, which I bought on E-Bay in November 2004. I just checked, but it only has one library, $.Library. All the files on the whole disc are date-stamped 29/2/1984, which I reckon is long after Acorn stopped supporting Ato...
by BeebMaster
Mon Oct 16, 2017 5:00 pm
Forum: acorn atom
Topic: Acorn Atom Econet
Replies: 14
Views: 540

Re: Acorn Atom Econet

Yes, any server, even Level 4. Actually the Master 128 (possibly later machines as well) has problems communicating with Level 1 because it transmits all the commands in lower case which aren't detected by the L1 file server which only does an upper case check. That's not a problem on the Atom of co...
by BeebMaster
Mon Oct 16, 2017 4:48 pm
Forum: acorn atom
Topic: Acorn Atom Econet
Replies: 14
Views: 540

Re: Acorn Atom Econet

Thank you. The Econet flyer predates the BBC Micro and the description of the network facilities is fairly primitive so I would say that is talking about a Level 1 type implementation. The references in the Econet System User Guide are more advanced, talking about directories, so that must be Level ...
by BeebMaster
Mon Oct 16, 2017 4:06 pm
Forum: software: other
Topic: Bounds / sanity checking on OSWORD F
Replies: 6
Views: 287

Re: Bounds / sanity checking on OSWORD F

In February 2013 I made an as-yet-unpublished picture set on clock setting with TIME$ and OSWORD 14 & 15. MOS 3.20 will accept all kinds of rubbish being sent to it. It accepts the day whether it's right or not; it isn't case sensitive and nor is the month: CMOSTime13binfo only.jpg It will accep...
by BeebMaster
Mon Oct 16, 2017 3:34 pm
Forum: hardware
Topic: RISC-PC Not Working
Replies: 61
Views: 2817

Re: RISC-PC Not Working

No resistor, is that vital? What value should I use? They are 2150mAh (mAH? MaH? MAH? Mah?) batteries. Would it be better to connect: Chip +5V with a wire direct to backplane +5V Battery +5V with a wire to a resistor then a diode then to the backplane +5V? I tried that without the resistor but it di...
by BeebMaster
Mon Oct 16, 2017 3:18 pm
Forum: acorn atom
Topic: Acorn Atom Econet
Replies: 14
Views: 540

Re: Acorn Atom Econet

The hierarchical file structure wasn't introduced till the Level 2 file server. In Level 1 users had a single-letter-DFS directory allocated to them and the file server disc was an unmodified DFS disc, so if there are directories with full names being referred to it must be at least a Level 2 type l...
by BeebMaster
Sun Oct 15, 2017 10:13 pm
Forum: hardware
Topic: RISC-PC Not Working
Replies: 61
Views: 2817

Re: RISC-PC Not Working

Yes, that's basically it, except it "looks" like a triangle as the two diodes are both connected to the same 5V point on the backplane. There's no diode in the battery holder, it's just a 3xAA battery holder which has 3 rechargeable batteries in. So what I hope I've done is to allow the RI...

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