Search found 437 matches

by geraldholdsworth
Sun Feb 17, 2019 12:12 am
Forum: general
Topic: Today I received.....
Replies: 5017
Views: 364602

Re: Today I received.....

jonb wrote:
Sat Feb 16, 2019 12:24 pm
Errr....
You'd be amazed at how much retro computing stuff one can fit in a 2001 Mazda MX-5!
by geraldholdsworth
Tue Feb 12, 2019 6:21 am
Forum: hardware
Topic: Low _low_ level ADFS F floppy disk format?
Replies: 10
Views: 315

Re: Low _low_ level ADFS F floppy disk format?

Have a peek at:
http://www.geraldholdsworth.co.uk/Guide ... cImage.pdf
It might answer some of your questions. This is only aimed at the disc image format files, not the actual magnetic data found on discs...but the two are not dissimilar (no pulse data, etc, in image files)
by geraldholdsworth
Mon Feb 04, 2019 10:15 pm
Forum: off-topic
Topic: What is this connector called?
Replies: 7
Views: 171

Re: What is this connector called?

it's a PSU out a old BT Vision box (40 or 160gb IDE hard drive), have about 30+ in nearest skip! (all brand new & sh!te as no -5v Didn't cost me much, and has the outputs I need - the PSU for my Datacentre (and CF to IDE adapters) let go and this popped up on Ebay (OK, I searched for it). Still int...
by geraldholdsworth
Mon Feb 04, 2019 10:12 pm
Forum: off-topic
Topic: What is this connector called?
Replies: 7
Views: 171

Re: What is this connector called?

MartinB wrote:
Mon Feb 04, 2019 9:24 pm
In addition to Paul’s suggestion, If you Google “molex friction lock” and select ‘Images’, you’ll be able to scroll through lots of matches and gather plenty of info on types and suppliers.
That's the jobbie - cheers Martin and Paul.
by geraldholdsworth
Mon Feb 04, 2019 8:55 pm
Forum: off-topic
Topic: What is this connector called?
Replies: 7
Views: 171

Re: What is this connector called?

Isolated:
PSU Connector.png
PSU Connector.png (15.33 KiB) Viewed 167 times
by geraldholdsworth
Mon Feb 04, 2019 8:50 pm
Forum: off-topic
Topic: What is this connector called?
Replies: 7
Views: 171

What is this connector called?

I recently bought this PSU: s-l500.jpg s-l500-2.jpg and I'd like to wire it up, without removing the connectors, but I have no idea what the connector is called and, hence, no idea what to search for. All my web searches for connectors have come up with all sorts of strange connectors, which I have ...
by geraldholdsworth
Sat Feb 02, 2019 2:55 pm
Forum: hardware
Topic: Possibly a stupid question about the Gotek
Replies: 16
Views: 478

Re: Possibly a stupid question about the Gotek

SpaceFlightOrange wrote:
Sat Feb 02, 2019 12:47 pm
I had removed the.txt in Finder on the mac, it was still there.
I find that annoying when Finder leaves in an extension and then hides it. You can change the extension by right clicking (double finger clicking) and selected 'Get Info', then change it there.
by geraldholdsworth
Tue Jan 29, 2019 1:28 pm
Forum: general
Topic: Today I received.....
Replies: 5017
Views: 364602

Re: Today I received.....

Wow...warp speed 9 Mr Sulu
Photo 29-01-2019, 13 23 44.jpg
One for my MacBook Pro, the other for my Windoze laptop (well, it was faulty, so getting a replacement sent out).

Haven't tried any emulators yet.
by geraldholdsworth
Tue Jan 15, 2019 3:33 pm
Forum: for sale / freebies
Topic: Dual disc drive enclosure
Replies: 1
Views: 181

Re: Dual disc drive enclosure

Can I claim this please? I'll drop you a PM in a mo.

Cheers,

Gerald.
by geraldholdsworth
Sun Jan 13, 2019 3:23 pm
Forum: hardware
Topic: POLL: How much Sideways RAM?
Replies: 20
Views: 562

Re: POLL: How much Sideways RAM?

I've got a Master - but I've put in another 64K of RAM using RAM chips in the cartridges. This means I have sideways RAM from slot 0 up to, and including, slot 7. That's without using either my Turbo internal co-pro or 6502 external co-pro.
by geraldholdsworth
Sat Jan 05, 2019 9:16 am
Forum: general
Topic: Why was Repton so loved by BBC users yet so disliked by the Commies?
Replies: 72
Views: 1981

Re: Why was Repton so loved by BBC users yet so disliked by the Commies?

Another possible reason, which hasn't been mentioned, is that there was already a game called Repton for the C64 which was totally different to the Repton for the BBC. This Repton was more like the BBC's Planetoid, so that when Repton 3 came out for the C64 folk maybe wondered what happened to Repto...
by geraldholdsworth
Mon Dec 31, 2018 12:06 pm
Forum: wanted
Topic: Acorn A3000 ARM 3
Replies: 23
Views: 702

Re: Acorn A3000 ARM 3

Do you have an ARM3 your willing to sell or know somebody who does? I will pay a very good amount for it. No, sorry, I don't. I have often thought about upgrading my A3000 to an ARM3 but I considered that the extra cost is not worth it these days. Besides, I'm happy with it as an ARM2. If you do, c...
by geraldholdsworth
Sun Dec 30, 2018 8:32 pm
Forum: wanted
Topic: Acorn A3000 ARM 3
Replies: 23
Views: 702

Re: Acorn A3000 ARM 3

Have a look at your motherboard first - all the A3000s I've come across have the existing ARM2 processor soldered onto the board. In order to upgrade to an ARM3, you'll need to also source a socket to solder on once you've removed the ARM2 (I also had a spare ARM2 when I did it to make sure the sock...
by geraldholdsworth
Fri Dec 21, 2018 10:49 am
Forum: emulators
Topic: BeebEm ADFS hard disk - accessing files
Replies: 7
Views: 228

Re: BeebEm ADFS hard disk - accessing files

ADFS accesses it's hard discs as drives 0,1,2 and 3. Floppy drives then become 4,5,6 and 7.
by geraldholdsworth
Thu Dec 20, 2018 5:18 pm
Forum: hardware
Topic: Three Floppy Drives in Master 128
Replies: 14
Views: 483

Re: Three Floppy Drives in Master 128

If you get it going i can have a look at patching adfs. Thank you Dominic. As I'm using a Retroclinic DualOS, and have two versions of DFS and ADFS, I was going to ask Mark Haysman. But, it will make more sense to document it here for others to follow, if they wish. Over the Chrimbo period, I'm dow...
by geraldholdsworth
Wed Dec 19, 2018 10:40 am
Forum: off-topic
Topic: iRepton 2
Replies: 1
Views: 196

iRepton 2

Not sure which forum was the best for this one (it's a BBC game, but not on the BBC)...but, a bit of self promotion I suppose: Superior have now released the iPhone and Android versions of Repton 2. It's self promotion because there are some levels (well, actually, a complete scenario) created by me...
by geraldholdsworth
Wed Dec 19, 2018 10:34 am
Forum: hardware
Topic: FDD head shield
Replies: 5
Views: 191

Re: FDD head shield

Take a peek at my thread:
viewtopic.php?f=3&t=16036&p=220469#p220469
plus there are a few others, in a similar vein, going back a few years asking the same question.
by geraldholdsworth
Wed Dec 19, 2018 10:31 am
Forum: hardware
Topic: Three Floppy Drives in Master 128
Replies: 14
Views: 483

Re: Three Floppy Drives in Master 128

Ahhh...could it be D1, D2 and D3 (IN4148) plus a 1K resistor in R2, and a BC239 in Q1, to give notS2 on pin 14 of the floppy bus?

Cheers,

Gerald.
by geraldholdsworth
Sun Dec 16, 2018 1:20 pm
Forum: hardware
Topic: Three Floppy Drives in Master 128
Replies: 14
Views: 483

Re: Three Floppy Drives in Master 128

1024MAK wrote:
Sat Dec 15, 2018 5:26 pm
Hardware wise, it’s a simple job.
Cool - so what does one need to do?

I'll worry about the software side later.

Cheers,

Gerald.
by geraldholdsworth
Sat Dec 15, 2018 4:29 pm
Forum: hardware
Topic: Three Floppy Drives in Master 128
Replies: 14
Views: 483

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: 8
Views: 445

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: 8
Views: 445

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: 399

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: 260

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: 226

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: 260

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: 5017
Views: 364602

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: 5017
Views: 364602

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: 408

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: 3791

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