Included tags: eeprom ×
Excluded tags: None
Image

Universal BIOS on 386 system not booting to CF card or HDD

VCFed about 2 months ago

Hi all. I recently got the Universal BIOS kind of working on my 3com NIC. I downloaded the 8kb 386 prebuilt binary, concatenated it four times to fill up the 32kb EEPROM, loaded it into the XTIDECFG utility, hit autoconfig, then saved it. Spoiler …
Image

Looking for manual: Digelec Model 824 eeprom p[ropgrammer.

VCFed about 3 months ago

I have read the past posts on the subject but unfortunately the links are so old that nothing is findable. searched also archive.org but only have the manual for model 804 if someone has a PDF copy of the Digelec Model 824 eeprom programmer , I would appre …

Quick Loader Compact card for Apple II

Apple Fritter about 3 months ago

AttachmentSize IMG_5256.jpeg4 MB IMG_5253.jpeg2.9 MB IMG_5250.jpeg2.73 MB IMG_5250.jpeg2.73 MB IMG_5252.jpeg2.81 MB QuikLoader Compact Card for Apple II II plus IIe or Platinum Computers. The QL is a really useful card, it automatical …

Quick Loader Compact Card for Apple II computers

Apple Fritter about 3 months ago

AttachmentSize Quick Loader Compact Card4 MB Quick Loader Compact Card2.9 MB Quick Loader Compact Card2.45 MB Quick Loader Compact Card2.73 MB Quick Loader Compact Card2.94 MB Quick Loader Compact Card2.81 MB QuikLoader Compact Card …

XT-IDE AT/x86 version: Unable to configure ports and addresses?

VCFed about 3 months ago

Since I have my Compaq Portable III in easy working order again, I want to try using XT-IDE as a pair of option EPROMS (note the missing "E") in the extra chip sockets provided on its motherboard. (That is, if it has the capability to do so.) Th …

PLCC eeprom data logger?

VCFed about 4 months ago

Hey guys, Quick question, I’m trying to modify the data on an eeprom to make it more useful for my application. Does anyone know of a way I can watch the data stream of the chip in real time? Would make it way easier to know what to modify. Thanks! …

TL866XX and T48 Chip programmers

Apple Fritter about 4 months ago

Just a note to people who need to program EEPROM, EPRON, GAL, etc.  The Open Source 'minipro' utility which previously only supported the TL866A/CS or TL966-II now has support for the newer T48 programmers which are currently available (and inexpensive, u …

In-system programmable, pin-compatible 27Cxxx EPROM replacements?

VCFed about 4 months ago

Folks. I have a distant memory of a family of JEDEC-pin-compatible memory devices (EEPROM or possibly NOR flash) that could be programmed in-system by address manipulation, i.e. without needing the system to explicitly support writing to the ROM. No amo …

homebrew Z180

VCFed about 4 months ago

Here's my homebrew version of the Z-180 design by Stephen Cousins (SC-131). It's very small -- fits on a 100mm x 100mm PCB. It could be lots smaller, but I added some footprints for alternative EEPROM that I wanted to experiment with. Right now it runs …

EEprom ID DA26

VCFed about 4 months ago

Does anyone know what EEprom the ID check: DA26 refers to ??, I bought 5 EEproms supposedly SST 27SF256 from a Chinese seller, Yeah i should know better by now but couldn't resist it, They arrived yesterday and are obviously USED and Re-Labled fakes, All 5 …

32-bit acorn hardware • Is it worth trying to get RISC OS 4.39 on ROM rather than just 4.02?

Stardot about 5 months ago

My SA RPC has got RISC OS 4.02 on ROM and softloads 4.39, I've always felt a bit conflicted about that as to me BITD RISC OS was something I only ever experienced as a near-incorruptible ROM and had been pondering trying to get 4.39 on ROM too.I was wonde …

Identify an EEPROM??

VCFed about 5 months ago

Is there a way to identify an eeprom that the manufacturer has etched the top blank? It is a 32 pin DIP. I have a TL866 Mini Pro. I just want to make a copy of it to use for diagnosis. Any ideas? Thanks! …

PROMs, EPROMs, EEPROMs

Apple Fritter about 5 months ago

All, In the process of completing my list of parts, I am now trying to figure out what to do for the PROMs. I found P-LAB's daughter board to use an EPROM instead. But these days it seems that even finding a UV EPROM is not that easy, and in any case …

For Sale or Trade

VCFed about 5 months ago

Hi, Boards I am looking for: Cromemco 32K ByteSaver Processor Technology VDM-1 Morrow Thinker Toys Disk Jockey II CompuPro RAM 17 SSM IO4 ExpandoRAM 64K board WameCo EPM-1 EEPROM board Sol-20 System/Buss Probe board MITS Altair 88-MU1 Systhesizer Board …

I need a 32K ByteSaver board ... a VDM-1 board ... and a Thinker Toys Disk Jockey II board ...

VCFed about 5 months ago

Hi, Boards I am looking for: Cromemco 32K ByteSaver Processor Technology VDM-1 Morrow Thinker Toys Disk Jockey II CompuPro RAM 17 SSM IO4 ExpandoRAM 64K board WameCo EPM-1 EEPROM board Sol-20 System/Buss Probe board MITS Altair 88-MU1 Systhesizer Board O …

EEPROM availability 2532 & 2732 replacements.

VCFed about 5 months ago

Is there a readily available EEprom (electrically erasable ROM) that is pin pin compatible with either the 2532 or the 2732. Ideally there would be a different type that could directly replace each, and also be readily programmable in common programmers li …
Image

8-bit acorn software: other • Communicator MOS disassembly

Stardot about 6 months ago

Spurred on by Tom Seddon's Master MOS disassembly I've taken back up my efforts at poking around in the Communicator ROM dumps. I got the BASIC, ARITHMETIC and NAMES modules into a reasonable enough state to rebuild them and retarget them for the Beeb816 …
Image

modern implementations of classic programming languages • I'm porting BBC BASIC to the Ben Eater 6502. I need testers!

Stardot about 6 months ago

Hello!I am in the process of creating 'BeebEater' a thin wrapper over the original BBC BASIC binary to make it compatible with Ben Eater's 6502 breadboard computer build.I've implemented handy things such as the serial terminal, LCD, and the PS/2 Keyboard …
Thumbnail

Serial IEC Disk Drive Interface

Apple Fritter about 6 months ago

Dear Friends,it is with great pleasure that @nippur72 and I share with you our latest project (actually, more his effort than mine, I just soldered some component...). As some of you had guessed: this is a microSD Storage Card add-on module that allows yo …
Image

Help & Support • Need help identifying component

Lemon64 about 6 months ago

I have several of the "VIC-20 MULTI USE PROJECT TEST CARTRIDGE" boards, and I'd like to use one to build a cartridge that can provide numerous games via EEPROM.I've attached several photos.- The first is of the bare board- The second is of the cartridge t …
Image

General • Eprom to CRT

Lemon64 about 7 months ago

HiI have an old cartridge with a 27256 eprom containing a few utillities like tape turbos, disk turbos, a copy program and monitor. When the cartridge is inserted, the computer powers up with a menu where you can select between the different utillities by …
Image

8-bit acorn software: other • ChatGPT client for 8-bit Acorn computers

Stardot about 7 months ago

I got the idea for this client from a message where someone wrote such a client for a Mac Classic, working under Mac OS 7 / 8 / 9. The only thing he uses is a proxy server because these computers do not support HTTPS. speak. Well, I actually have the same …
Image

Help & Support • Question about C64 Cartridge Board - Mutliple ROM's

Lemon64 about 7 months ago

I had ordered two "Commodore C64 16KB Cartridge Board v1.0" without components from DIYChris with the intent of creating a board with a EEPROM that has selectable ROM's. (First photo, imagine a blank board)What I received was the board for the "Commodore …
Image

Apple /// ROM Adapter and Custom ROM Project

Apple Fritter about 7 months ago

I wanted a reliable and easy to use adapter for the Apple /// system ROM ("B9 ROM"). Something to plug standard EPROMs & EEPROMs. I want to make a few ROM extensions - making use of the second ROM bank, which was orignally unused. Apple only installed …

small 68000 SBC

VCFed about 8 months ago

Here's a small homebrew 68000. It has 2 MB of SRAM and 128k of EEPROM. Runs at 25 MHz. Two serial ports at 38.4k baud via a 68681 DUART. It has a compact flash interface via a Toshiba 82C55A. Currently running CP/M 68k (v1.3) with sixteen 8 MB "d …