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Best way to figure out CF geometry

VCFed about 2 months ago

Is there a good utility for modern windows (10 preferably) that can be used with a USB compact flash drive to determine the geometry (sectors, heads and cylinders) of a CF card? I have tried using biosdrvs and ideinfo on my vintage 386 system (using a cf- …

How important are the IWM features for the Apple IIc ?

Apple Fritter about 3 months ago

Hi Fans - as you might know, I'm working on my Replica 2e project which aims to produce a substitute for all Apple II from the early ones to the Apple IIe and the Apple IIc without using any of Apple's proprietary custom ICs, like the MMU, IOU and  the I …

Battery/CMOS problems with my 286

VCFed about 3 months ago

Hi all! I recently purchased [this motherboard] from a UK-based seller on eBay. If I've understood everything correctly, [this] is the manual for the motherboard revision in question (3.0). Some specs available on theretroweb.com [here]. The seller states …

CF->IDE: WPcom and Lzone?

VCFed about 3 months ago

As described here, I got a CF->IDE adapter to put on the GoldStar Prime 2C multi-I/O card that I bought for my 286 recently. I then took the CF card that I've been using with my XT-CF-Lite 4.1 card (on my XT system previously, and - up until now - on m …
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Are these suitable for cache RAM?

VCFed about 3 months ago

I noted that Electronics Goldmine has a shipment of these 32KB 45 nsec SRAMs. Are these of use to anyone looking for cache SRAM for their 386/486 boards? Just wondering... ... ~ Rare …

IBM Thinkpad 300XD CMOS Battery

VCFed about 3 months ago

Hello Everyone, I am currently restoring an IBM Thinkpad 380XD and need to replace the CMOS battery. I have the part number and model, but can not seem to find any and the part number doesn't crossover that I can find to another battery. Can someone shed s …
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Linux • TapTo x86 platform

MISTerFPGA about 3 months ago

Hi everyone!I have made several modifications to MiSTer_Main to support the TapTo device:Detection of the ACR122U reader in the menu.x86 support through CMOS memory, using the TapTo API service.I have not yet made a pull request to the official repository …

Old monitor Acerview 11vga

VCFed about 4 months ago

So I finally got to rescue my old computer from my father's claws, it was an acer 1116SX, that turns on but won't boot because the CMOS clock died (replacement is being sent from e-bay) and my headache, the monitor, it seems that it had been "serviced …

8-bit acorn hardware • BBC master composite video issue

Stardot about 4 months ago

Hello all. I purchased a BBC Master last year on ebay and have only just got around to getting it up and running. I've replaced the collapsing X2 caps on the PSU and that now seems fine - happily the machine appears to be booting. The battery pack as bee …
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32-bit acorn hardware • A5000 boot issue

Stardot about 4 months ago

So I turned my A5000 on for the first time since before Xmas, and it isnt booting properly anymore. Not sure what the issue is, or how to repair.When you power on, there is a strange squawk from the speaker (attempted beep but strange attempt), then you …
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8-bit acorn hardware • Acorn Communicator Restoration

Stardot about 5 months ago

Hi AllTrying to restore and get working a Acorn Communicator, bought it 3 years ago during lockdown, it popped up on ebay, at the time hadnt a clue what a communicator was.. was on for 80Euros from Italy buy it now, so bought it...It looked like it had sp …

introduce yourself • Hello from Bristol

Stardot about 5 months ago

I grew up with the BBC Master, Acorn 3000/3020 and Risc PC in school and have had my own BBC Master and Risc PC for a number of years but never done much with them.I replaced the PSU caps in the BBC a few years ago but done very little else with it other …
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communications • Econet: *Notify fun

Stardot about 5 months ago

I've been having some fun playing with Econet *Notify To send on a Beeb:*NOTIFY <station> <message> To receive on a Beeb:The received message is dumped in the keyboard buffer! To send on a RISC OS 2 Archimedes:The NetFiler icon has a "Notif …

Compaq 386 - floppy drive and GOTEK woes

VCFed about 6 months ago

Hi All I've got a bunch of Compaq Portable III and 386 machines which I am trying to make usable again. It seems that the III was a 286 which tended to come with 5.25" floppy drives and a hard disk. The 386 came later with a bigger hard disk and usua …
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8-bit acorn hardware • Master Compact - Faulty

Stardot about 6 months ago

Hi Folks,I bought this Master Compact as a non runner, it looked in great nick so I took a punt….and got it.It came without the drive unit and no power supply.My wife decided to pay for it for me as my Xmas present so can only look at it when she is ou …

IBM XT286 with IDE and CF-Card problems

VCFed about 6 months ago

Hello, After in my old IBM XT286 (with the original BIOS from 04/21/86) the original MFM hard drive crashed, I replaced the original IBM Fixed Disk and Disk Drive Adapter with an M51505 A4 Mini Super IDE controller with a 256MB CF card. The floppy drives …

Corrupt CMOS even after battery change Sharp PC-7200

VCFed about 6 months ago

Hello everyone. I have a Sharp PC-7200 that when booting complains of "Invalid configuration information" and says to "Strike F1 to continue". When I got it, the original CMOS battery was dead, as you might expect. I've replaced it w …
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32-bit acorn hardware • A3000 - where does the via go?

Stardot about 6 months ago

Hi. I've done as so many have done, got my old A3000 out the loft, discovered a leaked battery and set about trying to repair it. It was not too bad, so I've given it a clean up. One of the zero ohm resistors snapped and the others looked to be in a poor …

UNCLE BERNIE'S IOU (and MMU) SUBSTITUTES IN PLDs

Apple Fritter about 6 months ago

Hi fans -may may have followed the work done by two people on substituting the MMU, see here: https://www.applefri... those who don't know yet, the MMU and the IOU are full custom ICs in DIL-40 p …

New Z80 CMOS NMOS Tester

VCFed about 6 months ago

Created a new Z80 tester PCB to sort through my stack of China sourced remarked chips. Unlike a simple NOP tester, this one loads code from an EPROM, can test at multiple frequencies, and distinguishes between CMOS and NMOS versions of the chip. …

Nan-Tan FMA8100 POST error beep

VCFed about 6 months ago

Got the power supply in for this beast but it won’t start. Throws a 1-1-3 error beep code on me instantly upon powerup. Phoenix ROM BIOS PLUS / PhoenixBIOS 1.xx POST/BEEP Codes According to this page, for my BIOS, this means “CMOS Read/Wr …

8-bit acorn emulators • B-Em Integra-B emulation

Stardot about 6 months ago

I'm having a problem getting b-em to emulate a BBC B with Integra-B. Selection these options from the Model menu for either the 1770 or 8271 disc interface just gives the BBC Micro prompt with Language? below it.I've tried nuking the installation and ./c …
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New Releases • DIY 5 buttons joystick for C64/VIC20 - 2.0

Lemon64 about 7 months ago

Since many, many years, a 3 button joystick for C64 is well known, but unfortunately not very widespread. Only the C64GS had some games which officially supported a second joystick button, and since the C64GS came out very late in the C64's lifespan, it n …

Commodore PC 40-III setting year past 1999 in BIOS

VCFed about 7 months ago

I have a PC 40-III with BIOS ROM versions 390339-05 / 390340-05. These appear to be the latest versions that I was able to locate on Zimmers. The system is an 80286 AT. I am able to set the correct time in CMOS but the date uses a 2 digit year format so …

ODEN RTC / CMOS Battery

VCFed about 7 months ago

Does anyone know where to obtain remanufactured ODEN OEC128887A RTC / CMOS Batteries? I bought 2 on eBay that are apparently dead. I know there's a trick to cut them open and solder a CR2032 battery to them. I have no confidence in my eyesight and solde …