PC on Ian's Projects

Mount Winchester FL16

Mon, 02 Jun 2025 00:00:00 +0000

A full length 16bit ISA Hard Card for mounting and powering drives from an ISA slot

Features

Make use of those ISA slots by mounting up to 2 x 3.5" drives or 3 x 2.5" drives (or a combination)
Hard drives can be powered directly from the card, or from the power supply.
5 power points for attaching up to 5 power cables which can be either Molex or SATA
Power LED

BOM (THT)

1 x 330 Ohm Resistor
1 x 3mm LED
Up to 5 x Molex or SATA power connector cables (optional)

XA1541 Active

Mon, 02 Jun 2025 00:00:00 +0000

XA1541 Active - Connect Commdore floppy drives such as the 1541 to the parallel port of the PC to read and write native Commodore disks, original circuit design is © Michael Klein and Nicolas Welte. Original XA1541 site

BOM (THT)

4 x 2N3904 transistors
4 x 4.7 KOhm resistors
1 x DB25 Male Edge Mount connector
1 x through hole DIN 45322 connector

XTra-RAM

Mon, 02 Jun 2025 00:00:00 +0000

512K RAM Expansion (8bit ISA) for XT class PCs and earlier with configurable banks

Features

512K RAM
8 x 64K banks
Each bank can be independently configured as:
- Low Address
- High Address
- Disabled

BOM (THT)

16 x 10 KOhm resistors
1 x 74LS245 20pin DIP
2 x 74LS157 16pin DIP
1 x 74LS151 16pin DIP
1 x AS6C4008-55PCN SRAM 32pin DIP
5 x 100nF Ceramic Capacitors
2 x 47uF Electrolytic Capacitors
1 x 10uF Electrolytic Capacitor
2 x 8-pole DIP switches

IC sockets optional

30-pin SIMM Extender

Mon, 01 Jan 0001 00:00:00 +0000

Details

A simple extender which makes the length of 30pin SIMMS the same as a 72pin SIMM. Clearly, this won’t make 30pin SIMMs work as a 72pin SIMM, but I created it so I could mix 72 and 30pin SIMMs in the same tray.

There’s a couple of standard heights already available as STLs, but the model is very configurable if you need something else.

Generic 3.5" Faceplate

Mon, 01 Jan 0001 00:00:00 +0000

Details

This is just another generic 3.5" faceplate which happens to fit a computer case that I needed it for and it may or may not work with yours.

I/O Shields

Mon, 01 Jan 0001 00:00:00 +0000

I/O Shield for AT Computers (eg 386/486 era systems)

Details

An I/O Shield for AT or Baby AT sized systems which usually just have a single onboard connector for an AT keyboard. These are generally 386 / 486 era systems

I/O Shield - Blank

Details

A blank I/O shield. Use it as a filler or modify it to fit a specific motherboard.

IBM 5150 Round Port Cap

Mon, 01 Jan 0001 00:00:00 +0000

Details

This is a “cap” for the round port which sits above the keyboard and cassette ports on an IBM 5150 (any maybe other contemporary models).

The original is a metal cap (which I have) but I wanted to use that empty port to mount two external switches for use with my PC Sprint Accelerator. One is a 6x6mm tactile momentary switch which is a reset button and the other is a square push button toggle switch to change between normal and turbo mode.

Necroware PS/2 to Serial Adapter Case

Mon, 01 Jan 0001 00:00:00 +0000

Details

This is a case I designed for the PS/2 to Serial Mouse Adapter by Necroware. There’s two slightly different versions of the STL for the case. One includes window supports which should be removed after printing and the other does not.

PC on Ian's Projects

Mount Winchester FL16

Links

BOM (THT)

XA1541 Active

Links

BOM (THT)

XTra-RAM

Links

BOM (THT)

30-pin SIMM Extender

Links

Details

Generic 3.5" Faceplate

Links

Details

I/O Shields

I/O Shield for AT Computers (eg 386/486 era systems)

Links

Details

I/O Shield - Blank

Links

Details

IBM 5150 Round Port Cap

Links

Details

Necroware PS/2 to Serial Adapter Case

Links

Details