Search results

Hello, I recently got this motherboard (photo by seller): I identified the board as AUVA COMPUTER 8088 TURBO TXM/10-III . I washed the board from dust and dirt, straightened the jumper contacts and installed the jumpers of the eeprom type selection in accordance with the description to 2764...

Hello, is it possible with INT 1 (single step)? By installing our own handler, we can learn the following opcode. Something like this: http://ivanlef0u.fr/repo/madchat/vxdevl/vdat/tudf0001.htm What do you think about it?.

Hello all and happy new year! This is my "weekend project" - ISA XT-SD controller. I know about the existence of XT-IDE and IDE-SD adapters. Therefore, there is no problem to use SD card on XT. This project is just a hobby, no more. So, main idea - use small CPLD for SPI bits shifting: On...

Searching Windows 3.0 Driver Development Kit (DDK)....

Hello, Need some help from people who know how AY-3-8910 and SAA1099 PSG chips work and who have some expirience in Z80 assembler. I read this article: http://www.worldofsam.org/node/670 - describe how play YM2149F music over Sam Coupe computer (contain one SAA1099 chip). Unfortunately, this...

Hello, Looking for keyboard pinout and protocol description, presumably from Videoton terminal: I want to connect it to modern PC with help microcontroller converter. Thank you.

Hello, I'm looking for a BIOS with this video card: This video-card is similar to this one: http://www.vgamuseum.info/index.php/cards/item/498-video-seven-l1a4199 and this card: http://www.minuszerodegrees.net/rom/rom.htm (VGA-16E) Both links contain a BIOS firmware (v1.09 and v1.14). But...

Hello, I read about Creative Music System (CMS) / Game Blaster at Great Hierophant blog. This sound card based on two Philips SAA1099 chips and looks easy to duplicate. Easier than adlib: SAA1099 data lines to ISA data lines, A0 to ISA A0, Vref through 10K resistor to VCC, DTACK (open collector...

Hello, As known, Norton Utilities v8.0 required 286 processor to run. If you try to run it on XT-class machine you got error: "This program requires at least a 286 CPU" and program closed. Remembering the successful launch WOLF3D on NEC V20 with simple patch 286 detection procedure, I decided...

Hello, Some days ago i connect YM2149F sound chip to PC through USB. Demo records: https://soundcloud.com/tronix286 I used old PIC16F628A DIP-18 without hardware USB to meet the AY era -) Firmware based on 16fusb library - software USB implementation for pic16 with some changes: - removed...

Hello, I want to introduce my simple DRAM memory tester based on PIC16F73 microcontroller. Possible replacement: PIC16F870, PIC16F873 and PIC16F876. DRAM tester can test 4164 (565RU5 exUSSR) and 41256 (565RU7 exUSSR) DRAM IC. Tester has two working mode: "simple LEDs" and "advanced UART"...

Hello, Today i found old 386 board based on OPTI 82C495XLC chipset without EEPROM chip. But i found sticker around EEPROM panel: BIG photo So, at internet i found two bioses for this chipset: 1) http://chukaev.ru54.com/bios/3opm002.zip - AMI BIOS for 82C495XLC. I born into 27C512 and when...

Hello, Please help identify strange sound(?) card. On this board present two UM5100 chips, two DB-9 connectors. Left side is almost equal to the right side. Also searching drivers or/and software for this board. PHOTO1 - full length PCB PHOTO2 - right side PHOTO3 - connectors Thank you.

Hello, i want make new demo (or rather intro) for CGA and XT (8088 4,7Mhz). CGA mode - standart mode 320x200x4 color (mode 4 or 5). For "twister bar" effect, like this: i need fast assembler procedure drawing horizontal line with pattern, becouse twister had 4 faces and CGA have 3 color (+1...

Hello, i am trying build my own XT-IDE based on Altera EPM7064SSLC44-10. Original XT-IDE contain 11 chips which are difficult to interconnect surface mounting. Using Altera number of chips decreased to 7. Soldered. Logical diagram : But i have trouble: on my XT i never get detect if HDD...

Hello, I have IBM 1501492 ISA-8 MFM controller but in right upper corner missing transistor Q1. Please help to Id this transistor. Thank you.

Hello, I have PCB based on 8088 CPU marked BULL S.A CARTE LA2.1 290 108-00A NEP-14T LK 17 0240. Need help for identify and, if its possible, manuals for this terminal. Especially i interested in connectors (power and video). Thank you. Large image...

Hello, today i get WYSE TECHNOLOGY 1984 990058 PCB: full size image: http://habrastorage.org/files/8a8/42d/813/8a842d8130554a5fa77fde7a58ff2bd9.jpg If i understand correctly, its WYSE WY-50 motherboard. So, i want start this board, but i havent PSU, keyboard and CRT for it. I found some...

Hello, I am newbie in electronics. Some days ago i started learning PIC microcontrollers. I found useble PIC's feature named "Parallel Slave Port". PIC18F452 have PSP (parallel slave port), hardware SPI and a lot of memory (1,5 Kb) So, i made first prototype SD controller for my older...