Search found 418 matches

by geraldholdsworth
Sat Dec 15, 2018 4:29 pm
Forum: hardware
Topic: Three Floppy Drives in Master 128
Replies: 1
Views: 57

Three Floppy Drives in Master 128

Was reading with interest this page: http://www.adsb.co.uk/bbc/disk_controllers/ Right at the bottom in mentions that the Master 128 is capable of supporting three floppy drives with the addition of a few diodes. However, it also mentions that the DFS and ADFS ROMs do not support it. But, the obviou...
by geraldholdsworth
Fri Dec 14, 2018 1:38 pm
Forum: software
Topic: RiscPC Clean Setup
Replies: 7
Views: 165

Re: RiscPC Clean Setup

anightin wrote:
Fri Dec 14, 2018 11:39 am
On drive size, I read that the Max drive size for RO 3.6 and above is 128GB so went for 64GB to be safe.
Think it might be a Filecore limit, but don't quote me. You can certainly have drives in that sort of size on a Raspberry Pi under RISC OS 5...I've got a 64GB one on my Pi.
by geraldholdsworth
Thu Dec 13, 2018 7:19 pm
Forum: software
Topic: RiscPC Clean Setup
Replies: 7
Views: 165

Re: RiscPC Clean Setup

I've created a 64GB CF Hard drives on the primary IDE interface for each system, which is booting using universal boot. I thought RISC OS 3 and 4 could only use a max 40GB partition? (ISTR that v3.5's max was 512MB) 1) How to get the 586 card up and running on each system You'll need the !PC applic...
by geraldholdsworth
Wed Dec 05, 2018 8:52 pm
Forum: software: classic games
Topic: Chuckie Egg Levels
Replies: 7
Views: 266

Re: Chuckie Egg Levels

AndyF wrote:
Wed Dec 05, 2018 8:19 pm
I don't know what happens with the level counter on these versions
I remember once that I got to level 142 on the Electron version...at which point I gave up because I had so many lives, and about 2 million points, and it was just repeating over and over again.
by geraldholdsworth
Tue Dec 04, 2018 11:37 am
Forum: hardware
Topic: Two CF to IDE adapters as Master/Slave
Replies: 5
Views: 193

Re: Two CF to IDE adapters as Master/Slave

I haven't spent much time on either - not that there is much to do as both cards only have a single jumper on them (Master/Slave or Slave/Master). I never thought of a dual adapter. Only got a second single adapter because I already had a single adapter and it was a use for it. Could just go back to...
by geraldholdsworth
Tue Dec 04, 2018 8:10 am
Forum: software: classic games
Topic: Repton 2 colours
Replies: 1
Views: 145

Re: Repton 2 colours

The colours for the maps on BBC and Electron Repton 2 come from lookup tables, along with a bit of calculations: "The palette is stored in two locations. The first location is four bytes. Each byte is made up of the logical colour (top four bits), and the actual colour (lower four bits). To get the ...
by geraldholdsworth
Mon Dec 03, 2018 8:59 pm
Forum: hardware
Topic: Two CF to IDE adapters as Master/Slave
Replies: 5
Views: 193

Two CF to IDE adapters as Master/Slave

Has anyone used two of these CF to IDE adapters, as Master and Slave, on a DataCentre (or, indeed, any other IDE interface) and got them working OK? I just get both with their activity light permanently on. Works fine as a Master with a hard drive as a Slave. s-l300.jpg Thought it might be nice, if ...
by geraldholdsworth
Thu Nov 22, 2018 4:46 pm
Forum: general
Topic: Today I received.....
Replies: 4928
Views: 349448

Re: Today I received.....

And the Stormtrooper's speeder bike, and Darth Vader....
by geraldholdsworth
Thu Nov 22, 2018 3:07 pm
Forum: general
Topic: Today I received.....
Replies: 4928
Views: 349448

Re: Today I received.....

A nice new (to me) laptop to replace my MacBook Air (gone from virtually hard to upgrade 13" with 128GB of SSD to easier to upgrade 15" with 512GB of HDD), and the latest Star Trek series on Blu Ray:
Photo 22-11-2018, 14 58 41.jpg
(ignore my son's toys, guarding the said laptop)
by geraldholdsworth
Wed Nov 21, 2018 9:52 pm
Forum: hardware
Topic: Name that ROM? (plus a dumb question about EEPROM programming)
Replies: 7
Views: 350

Re: Name that ROM? (plus a dumb question about EEPROM programming)

And question two (because otherwise I'll feel like an idiot for starting a new topic when someone immediately points me to the answer elsewhere) - on the Model B I've been able to simply write ROM images to half of a 28C256 (32kB) EEPROM and the machine recognised them quite happily. The Master.. d...
by geraldholdsworth
Tue Nov 20, 2018 9:05 pm
Forum: software: other
Topic: Updated BASIC Editor
Replies: 46
Views: 3534

Re: Updated BASIC Editor

thearttrooper wrote:
Tue Nov 20, 2018 8:30 pm
But I have the same challenge: how to be sure I'm loading the right editor.
*EDIT takes you into Edit
*BE takes you into The BASIC Editor
by geraldholdsworth
Sun Nov 18, 2018 6:26 pm
Forum: software: other
Topic: Updated BASIC Editor
Replies: 46
Views: 3534

Re: Updated BASIC Editor

I am trying to load the BASICED.ROM into BeebEm. I added it to the ROM configuration of the Master 128 (ROM 8) but it doesn't show up in *ROMS. I made an SSD containing the ROM image and then used *SRLOAD BASICED 8000 4 but that results in a Channel error. Is it a valid ROM image?...i.e. make sure ...
by geraldholdsworth
Sun Nov 18, 2018 11:01 am
Forum: other vintage computer hardware, software and games
Topic: Vintage Collections
Replies: 37
Views: 930

Re: Vintage Collections

I used to have somewhere nearing 70 computers, which included some modern Windows PCs as well as the retro ones. It also included about 15 BBC Masters, a few BBC B's and B+'s, and quite a few Archimedes (A310,A440/1,A540,A3xxx,A4000,A500, etc.). I sold most of them to Mark at Retroclinic and bought ...
by geraldholdsworth
Thu Nov 15, 2018 8:12 pm
Forum: hardware
Topic: Floppy drive cleaning
Replies: 3
Views: 119

Re: Floppy drive cleaning

If it just adds weight, then could I mount it upside down, so it doesn't interfere with the disc?
by geraldholdsworth
Thu Nov 15, 2018 7:55 pm
Forum: hardware
Topic: Floppy drive cleaning
Replies: 3
Views: 119

Floppy drive cleaning

After reading a few, old, threads here about cleaning 5.25" drives, I decided to have another go at a Cumana drive I have kicking about, following the advice I'd read in these threads. So, first thing, was to remove the metal cover from the drive head. That made one heck of a difference as I was the...
by geraldholdsworth
Mon Nov 05, 2018 7:48 pm
Forum: hardware
Topic: The best SD card reader for the Beeb?
Replies: 19
Views: 559

Re: The best SD card reader for the Beeb?

There are interfaces available that give you an internal user port. As mentioned above that the Master has a modem port, for which there is a user port interface, or there is one that plugs into the Econet connectors inside - which both the BBC and Master have. This is what I have, and works really ...
by geraldholdsworth
Mon Nov 05, 2018 5:02 pm
Forum: hardware
Topic: Colour link on BBC Master
Replies: 14
Views: 457

Re: Colour link on BBC Master

I'm actually amazed at those people who can look at a circuit and say exactly what it does. It is really easy. The pixies put the electrons in wheelbarrows, and push them around till they get bored, they then empty them into a big pit in an alternate dimension. Or that is how it seems to work. Ah.....
by geraldholdsworth
Mon Nov 05, 2018 1:15 pm
Forum: hardware
Topic: Colour link on BBC Master
Replies: 14
Views: 457

Re: Colour link on BBC Master

Fitting a link in position LK16 would bypass the filter formed by L1 and C81. Not very useful. Cheers Mark - I was actually studying the Master circuit diagrams looking for the audio circuitry and found this link. For an Engineer, I'm not too good with most electrical circuits and what they do. I'm...
by geraldholdsworth
Sun Nov 04, 2018 9:51 pm
Forum: hardware
Topic: Colour link on BBC Master
Replies: 14
Views: 457

Re: Colour link on BBC Master

What does LK16 do?
by geraldholdsworth
Sat Nov 03, 2018 9:14 pm
Forum: hardware
Topic: MMFS Development and Support
Replies: 748
Views: 49521

Re: MMFS Development and Support

except I get 'Bad sum?' sometimes when I press BREAK. I am now able to repeat this problem: Now I've got the correct ROM into the MOS ROM, as ROM number 10, and with the older version in the cartridge removed - if I type *UNPLUG 10, then press BREAK (or CTRL BREAK) I get the 'Bad sum?' error as the...
by geraldholdsworth
Fri Nov 02, 2018 9:24 pm
Forum: hardware
Topic: MMFS Development and Support
Replies: 748
Views: 49521

Re: MMFS Development and Support

Oh you silly bu**er...you know what I've done, don't you? Only gone and used the M/MAMMFS3 image and not the T/MAMMFS3 image!!!
D'OH!
by geraldholdsworth
Fri Nov 02, 2018 8:56 pm
Forum: hardware
Topic: MMFS Development and Support
Replies: 748
Views: 49521

Re: MMFS Development and Support

Hi all, OK, finally got my internal IFEL dual userport installed, into the Econet connector, connected up the TurboMMC and then reprogrammed the MOS so that MMFS 1.41 is in place of ViewSheet (ROM 10, IIRC) - I'm also using a Retroclinic DualOS, so I just purchased another flash 2Mbit ROM, copied th...
by geraldholdsworth
Fri Nov 02, 2018 11:20 am
Forum: hardware
Topic: Master ET (Econet Terminal)
Replies: 15
Views: 443

Re: Master ET (Econet Terminal)

Couldn't you swap the two VIAs in a Master?
Annoying that they need to be desoldered - as this has the possibility of damaging them.
by geraldholdsworth
Wed Oct 17, 2018 4:14 pm
Forum: hardware
Topic: Rust on Master keyboard
Replies: 1
Views: 117

Rust on Master keyboard

More work on my BBC Master....
20181017_160101009_iOS.jpg
How would one treat these spots of rust, without removing every single keyswitch?
by geraldholdsworth
Wed Oct 17, 2018 4:10 pm
Forum: hardware
Topic: Colour link on BBC Master
Replies: 14
Views: 457

Re: Colour link on BBC Master

6.4. Master 128 issue 1 motherboards A 470 picofarad capacitor should be connected between the east leg of R137 and the east leg of R153. These are located to the east of the modulator. Source: http://mdfs.net/Info/Comp/BBC/Monitor/BBCtoTV.htm Yep - it says issue 1, but nothing about issue 2. I can...
by geraldholdsworth
Wed Oct 17, 2018 4:07 pm
Forum: hardware
Topic: Colour link on BBC Master
Replies: 14
Views: 457

Re: Colour link on BBC Master

Richard Russell wrote:
Wed Oct 17, 2018 2:41 pm
The equivalent link on a BBC Micro is LK39, I assumed that all BBC Masters had one too (I thought it was a BBC requirement) so is that not the case?
Not Issue 1...apparently.
by geraldholdsworth
Wed Oct 17, 2018 12:34 pm
Forum: hardware
Topic: Colour link on BBC Master
Replies: 14
Views: 457

Colour link on BBC Master

Ages ago I put in a cap across a couple of transistors on my BBC Master so I get colour out of the composite out. However, months later, I read that an Issue 2 board has a link ready made for this purpose. So, as I've currently got the machine in bits to do some other long awaited upgrades, should I...
by geraldholdsworth
Tue Oct 16, 2018 9:02 am
Forum: emulators
Topic: RPCEmu 0.9.0 and Macs - beta testers wanted
Replies: 62
Views: 3310

Re: RPCEmu 0.9.0 and Macs - beta testers wanted

I assume you're using the Caliston build, then? I've not used it before, hence my original question. Yep - I've only ever used the MacOS binaries which are on the RPCEmu website. When I installed RPCEmu on a Windows PC, it confused me as to what this Recompiler and Interpreter was, and which to use...
by geraldholdsworth
Tue Oct 16, 2018 7:41 am
Forum: emulators
Topic: RPCEmu 0.9.0 and Macs - beta testers wanted
Replies: 62
Views: 3310

Re: RPCEmu 0.9.0 and Macs - beta testers wanted

Out of interest, how do you switch between different versions? Do you use symbolic links and the like, or do you move/rename folders? I go to the Preferences and change the location of the Data directory, which points towards all the ROM images, RISC OS configuration, etc., and of course, HostFS. C...
by geraldholdsworth
Sun Oct 14, 2018 9:11 pm
Forum: emulators
Topic: RPCEmu 0.9.0 and Macs - beta testers wanted
Replies: 62
Views: 3310

Re: RPCEmu 0.9.0 and Macs - beta testers wanted

This implements a setting that tells the emulator where to find the root for HostFS, so you're not restricted to having it in "Application Support" or wherever you've put it. It doesn't even need to be called "hostfs". You can click on the "..." button and it'll allow you to browse for a folder. Al...