Search found 499 matches

by Wheel_nut
Mon Feb 22, 2021 10:27 pm
Forum: 8-bit acorn software: other
Topic: A new MENU system for MMC/Gotek
Replies: 202
Views: 21637

Re: A new MENU system for MMC/Gotek

I've added an MMFS2.zip to the first post, it is basically each .SSD that is in the beeb.mmb extracted to a file that is just the number of the disc, starting at 0. If the disc was writeable, it will have a .SSD extension, but for some reason none do! It is supposed to mark the disc writeable if an...
by Wheel_nut
Mon Feb 22, 2021 12:42 am
Forum: 8-bit acorn hardware
Topic: Cheap SD/MMC Readers
Replies: 34
Views: 26135

Re: Cheap SD/MMC Readers

Hi Daniel, Yes, I fully agree that the Gotek is not a directly comparable device but it is one of the most common modern alternatives to the Floppy Disk legacy storage that existed when the Beeb was conceived. The discussion of which storage device to use comes up frequently in these fora and my int...
by Wheel_nut
Sun Feb 21, 2021 7:59 pm
Forum: 8-bit acorn hardware
Topic: Cheap SD/MMC Readers
Replies: 34
Views: 26135

Re: Recent Developments MMFSv1, MMFSv2 and Adapters

This post is work in progress so please PM me if you spot any errors or omissions. Probably worth noting that there's a distinct difference between using the gotek as a floppy emulator (which is its primary function) and using it as an mmc-alike. DUTILS etc are really only relevant for the later, w...
by Wheel_nut
Sun Feb 21, 2021 6:27 pm
Forum: 8-bit acorn software: other
Topic: A new MENU system for MMC/Gotek
Replies: 202
Views: 21637

Re: A new MENU system for MMC/Gotek

Updated ZIPs with new version of Asteroids, faster animation and fixed shooting sound timing. Hi Tricky, It would be nice if you could also release a ZIP of your latest compendium and Menu for MMFSv2. [-o< There seems to be a growth in interest recently for MMFSv2 and I would like to include your G...
by Wheel_nut
Sun Feb 21, 2021 1:34 pm
Forum: 8-bit acorn hardware
Topic: Cheap SD/MMC Readers
Replies: 34
Views: 26135

Re: Cheap SD/MMC Readers

melchett wrote:
Sun Feb 21, 2021 9:56 am
Can you change the MMFSv2 link to remove the bookmark so it goes direct to the top of the page where the full images are?

viewtopic.php?f=2&t=21121&p=302463
Done. Could you check that it is now linking correctly. - R
by Wheel_nut
Sat Feb 20, 2021 5:47 pm
Forum: 8-bit acorn hardware
Topic: Cheap SD/MMC Readers
Replies: 34
Views: 26135

Re: Cheap SD/MMC Readers

melchett wrote:
Sat Feb 20, 2021 4:21 pm
Wheel_nut wrote:
Mon Feb 01, 2021 4:49 pm
[*]Unpacked Beeb.MMB Compendium for MMFSv2
[*]RichardFairman's Roll-your-own menu derived from Tricky's Menu System
Do you have links for these two?
Links added, Same thread Roobrb!'s unpacked Beeb.MMV Compendium at top and RFairman's at bottom of thread.
by Wheel_nut
Sun Feb 14, 2021 9:28 pm
Forum: 8-bit acorn hardware
Topic: IFEL MMC/SD & Watford 5.25 floppy drive co-existence
Replies: 23
Views: 783

Re: IFEL MMC/SD & Watford 5.25 floppy drive co-existence

......... It looks more like a deliberate mod to me rather than a repair, but what it does, I have no idea. It works with most ROMS as it is (except Acorn Language if I remember correctly). I am about to buy Steve Pictons FLASH/SRAM 16 ROM card as an update, as it will give the easy ability to load...
by Wheel_nut
Wed Feb 10, 2021 4:53 pm
Forum: 8-bit acorn hardware
Topic: Faulty BBC B
Replies: 15
Views: 355

Re: Faulty BBC B

Thought I should point out that this Beeb has had some mods - no idea what they are but..... IC5 pin 27 has been wired on the underside of the board to IC10 pin 1. I haven't checked, but I believe that this is the standard fix to the inverted Video Bug in the earlier version of the Video ULA IC30 p...
by Wheel_nut
Tue Feb 09, 2021 2:37 am
Forum: 8-bit acorn hardware
Topic: Export Beeb MMC Corruption
Replies: 107
Views: 3153

Re: Export Beeb MMC Corruption

I'm going to move my chips over to bet on problems with the Grounding - Earth loops and induced hum and noise from the SMPS. Try putting a 0.1uF (100nF) ceramic capacitor soldered directly beneath the power take-off connector on my adapter or similar on Jason's adapter. This should kill any HF glit...
by Wheel_nut
Mon Feb 08, 2021 12:31 pm
Forum: 8-bit acorn hardware
Topic: IFEL MMC/SD & Watford 5.25 floppy drive co-existence
Replies: 23
Views: 783

Re: IFEL MMC/SD & Watford 5.25 floppy drive co-existence

I would not modify the mainboard if you plan on keep using the Solidisk board, because that board already does additional address decoding for the extra ROM slots. It's probably decoding all 16 ROM addresses (at least the 2M128 does, between the combination of RAM and ROM). I agree. My suggestion w...
by Wheel_nut
Sun Feb 07, 2021 9:36 pm
Forum: 8-bit acorn hardware
Topic: Ray Harper BBC and Electron Menu Summary
Replies: 1
Views: 148

Re: Ray Harper BBC and Electron Menu Summary

Thanks Ray. I have added your header and linky to my post in the Sticky thresd.

Robin
by Wheel_nut
Sat Feb 06, 2021 1:14 pm
Forum: 8-bit acorn hardware
Topic: ISO BBC B female power spade connectors
Replies: 2
Views: 175

Re: ISO BBC B female power spade connectors

Mark Haysman who runs Retroclinic is your man! He holds stock of this stuff and his prices and service are second to none. =D>
by Wheel_nut
Sat Feb 06, 2021 12:13 am
Forum: 8-bit acorn hardware
Topic: IFEL MMC/SD & Watford 5.25 floppy drive co-existence
Replies: 23
Views: 783

Re: IFEL MMC/SD & Watford 5.25 floppy drive co-existence

The documentation is very detailed in its instructions for installation and use BUT gives no information on what it is and what it is meant to do! Here is my best guess: From the picture, I see that it has Four 8k x 8 Static Rams which would account for the 32K SHADOW RAM but I cannot see any SIDEWA...
by Wheel_nut
Wed Feb 03, 2021 10:13 pm
Forum: 8-bit acorn hardware
Topic: IFEL MMC/SD & Watford 5.25 floppy drive co-existence
Replies: 23
Views: 783

Re: IFEL MMC/SD & Watford 5.25 floppy drive co-existence

So I already have a Solidisk Fourmeg RAM/ROM expansion board fitted - would that help with this scenario? Yes, IF it works! I don't have one of those but I have a Solidisk 32K SRAM expansion board and have discarded it because it is too clumsy an implementation for what it does. Post pictures of yo...
by Wheel_nut
Mon Feb 01, 2021 11:00 pm
Forum: 8-bit acorn hardware
Topic: IFEL MMC/SD & Watford 5.25 floppy drive co-existence
Replies: 23
Views: 783

Re: IFEL MMC/SD & Watford 5.25 floppy drive co-existence

Thanks Robin - that is a lot to take in, and some good tips - I appreciate your effort, it will just take some time to digest. Thinking ahead, what equipment would I need to flash a ROM - a UV eraser and a PC based programmer, or have things moved on? Any suggestions for cost effective access to th...
by Wheel_nut
Mon Feb 01, 2021 4:49 pm
Forum: 8-bit acorn hardware
Topic: Cheap SD/MMC Readers
Replies: 34
Views: 26135

Recent Developments MMFSv1, MMFSv2 and Adapters

A lot has happened during the Covid19 lockdown era and I would like to summarise these here: HEADLINES: Martin Mather's release of MMFS2 gains traction and development work undertaken by Bobbi Development history can be found here https://stardot.org.uk/forums/viewtopic.php?f=2&t=21061&sid=e...
by Wheel_nut
Sun Jan 31, 2021 7:43 pm
Forum: 8-bit acorn hardware
Topic: IFEL MMC/SD & Watford 5.25 floppy drive co-existence
Replies: 23
Views: 783

Re: IFEL MMC/SD & Watford 5.25 floppy drive co-existence

Thanks Wheel Nut (Robin) - good info. I have MMFS Turbo V1.45/Basic V2. It is installed in a higher priority ROM slot than the Watford DFS, as it is mentioned on the power up welcome screen, rather than the Watford DFS (or Solidisk) info before. You have prompted me to look ... and I see that Hogle...
by Wheel_nut
Sat Jan 30, 2021 10:36 pm
Forum: 8-bit acorn hardware
Topic: IFEL MMC/SD & Watford 5.25 floppy drive co-existence
Replies: 23
Views: 783

Re: IFEL MMC/SD & Watford 5.25 floppy drive co-existence

Hello folks, So I have recently added an IFEL MMC/SD card to my BBC B Series 7. It has a Watford DFS1.3 ROM, and the MMFS ROM (I believe) that came with the card. The BBC boots up showing the Turbo MMC text, and all is well. However, while the MMC card works fine and there are no obvious conflicts ...
by Wheel_nut
Sat Jan 30, 2021 3:27 pm
Forum: 8-bit acorn hardware
Topic: Export Beeb MMC Corruption
Replies: 107
Views: 3153

Re: Export Beeb MMC Corruption

I’m still curious as to why a capacitor has been bodged (nicely) between the 5 V and 0 V (south west) on my board. Was it trying to compensate for something quirky about this particular unit I wonder? The only reason that I can think of is that someone needed to add a "Reservoir" Capacito...
by Wheel_nut
Fri Jan 29, 2021 5:08 pm
Forum: 8-bit acorn hardware
Topic: Export Beeb MMC Corruption
Replies: 107
Views: 3153

Re: Export Beeb MMC Corruption

Hi all Ok here is the setup I’ve created this afternoon. SD card adapter pics below A0C1290D-F67F-4325-9C71-571B3D85C062.jpeg Hi John, Well done on diagnosing the issue with the Export Beeb. The Econet problem has been reported before and iirc, the fix was to remove the station ID jumper(s). I didn...
by Wheel_nut
Thu Jan 28, 2021 6:58 pm
Forum: 8-bit acorn hardware
Topic: Export Beeb MMC Corruption
Replies: 107
Views: 3153

Re: Export Beeb MMC Corruption

However I do run SmartSPI with a Retroclinic Card on the user port with absolutely no issues at all so I’m not sure if the shielding could be causing any issues? Appreciate you are trying the printer option but also had problems with the user port. Roobarb! has successfully installed a User Port MM...
by Wheel_nut
Thu Jan 28, 2021 3:53 pm
Forum: 8-bit acorn hardware
Topic: Export Beeb MMC Corruption
Replies: 107
Views: 3153

Re: Export Beeb MMC Corruption

The symptoms that you are getting with both, the TurboMMC and the Parallel Port adapters, being similar, point to something wrong with the VIA or upstream of the VIA. ... if you discount the possibility of glitches on the Vcc and Ground lines. I'm going to try changing how the PSU is installed. The...
by Wheel_nut
Tue Jan 26, 2021 2:44 pm
Forum: 8-bit acorn hardware
Topic: Export Beeb MMC Corruption
Replies: 107
Views: 3153

Re: Export Beeb MMC Corruption

The Beeb is known to be on the limit of load on the Data Bus and the bodge was to put a bank of Pull-up Resistors to make it work. You could try reducing the load on the Bus by removing any pluggable devices like the A>D Converter, the Disk Controller and the Speech Chip(s) and see if that makes a d...
by Wheel_nut
Tue Jan 26, 2021 3:48 am
Forum: 8-bit acorn hardware
Topic: Export Beeb MMC Corruption
Replies: 107
Views: 3153

Re: Export Beeb MMC Corruption

Tinkering again this evening I've once again found that from cold the card can be read more reliably (as in, it sometimes works) and after the system has been on for some time even getting a result from *DCAT usually results in a read error or "Card format?" error on CTRL-BREAK. After hal...
by Wheel_nut
Mon Jan 25, 2021 3:10 pm
Forum: off-topic
Topic: AliExpress Shipping oddity
Replies: 0
Views: 116

AliExpress Shipping oddity

I have been trying to figure out WHY some of my purchases from AliExpress arrive in about 15 Days and others take around two months! I have found out that the difference lies in the subtle difference of the addition of the word Global to the descriptor of the shipping method. 30-50 days Free Shippin...
by Wheel_nut
Sun Jan 24, 2021 4:27 pm
Forum: 8-bit acorn software: other
Topic: MMFS2 -> WiDFS
Replies: 6
Views: 349

Re: MMFS2 -> WiDFS

I was a pain in the usual place to figure out how the command structure is build in the MMFS and I still haven't figured it out completely yet. In debug mode I can see that the ROM issues a "command not found" call so it starts looking for a file on the MMC card; that's where the MMC Read...
by Wheel_nut
Thu Jan 21, 2021 2:18 pm
Forum: 8-bit acorn hardware
Topic: Export Beeb MMC Corruption
Replies: 107
Views: 3153

Re: Export Beeb MMC Corruption

Hi Andy, You could take the pragmatic option and simply use the Export Been with my adapter on the User Port and use Jason's adapter on the Printer Port of your standard Beeb. If you want to persevere with getting the Printer Port adapter working on the Export Beeb, here is the next step I would sug...
by Wheel_nut
Tue Jan 19, 2021 3:15 pm
Forum: 8-bit acorn hardware
Topic: Export Beeb MMC Corruption
Replies: 107
Views: 3153

Re: Export Beeb MMC Corruption

Back to looking at this again now, I have a little printer port extension cable on which I have severed the lead for pin 25, so in theory I now have this test hook I can clip anywhere on the board. So... Any suggestions! :lol: Hi Andy, here are some suggestions: Verify that BOTH of your adapters wo...
by Wheel_nut
Mon Jan 18, 2021 5:33 pm
Forum: 8-bit acorn hardware
Topic: Beeb case screws
Replies: 2
Views: 156

Re: Beeb case screws

The Issue 3 cases are slightly different from the Issue 7 Cases and some use No6 x 5/8" and others No 6 x 3/4". You can get them a lot cheaper from Kayfast here https://www.ebay.co.uk/itm/FLANGE-HEAD-SELF-TAPPING-SCREWS-BLACK-PHOSPHATE-FLANGED-TAPPERS-6-8-10-GAUGE/361180915789?ssPageName=S...
by Wheel_nut
Sat Jan 16, 2021 3:28 pm
Forum: 8-bit acorn software: other
Topic: A new MENU system for MMC/Gotek
Replies: 202
Views: 21637

Re: A new MENU system for MMC/Gotek

Would an MMFS2 version be the same as the MMC version, but with the .SSDs in a folder like the GOTEK version, but without the .ssd extensions? I believe that this is what Roobarb! did with your earlier version to make it work with MMFS2 but he said that he had to do some renaming of the Discs. As I...

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