mirror of
https://codeberg.org/hkzlab/TK2000_DiskInterface_REDUX.git
synced 2025-12-25 17:12:29 +11:00
64 lines
4 KiB
Markdown
64 lines
4 KiB
Markdown
# TK2000 Disk Interface REDUX
|
|
|
|
## DISCLAIMER
|
|
|
|
Any use of this project is **under your own responsibility**.
|
|
You will be responsible of checking the correct construction and functionality of your board.
|
|
By using this project You will agree that I cannot be held responsible if it will destroy any of your devices, damage your computer, burn down your house or whatever.
|
|
|
|
### Sponsorship
|
|
|
|
|
|
|
|
This project is kindly sponsored by [PCBWay](https://pcbway.com).
|
|
PCBWay specializes in manufacturing high-quality PCBs and makes them affordable to hobbyist and professionals alike.
|
|
|
|
The range of services they offer include PCB prototyping, assembly, instant quotes for your order, a verification process by a team
|
|
of experts and an easy to use, hassle-free order process.
|
|
|
|
I'm grateful to PCBWay for the help in evolving and testing this project. You can order the currently released revisions of the board from them, see the link below!
|
|
|
|
## Introduction
|
|
|
|
The TK2000 had a floppy disk adapter that came in form of a cart, connected directly to the computer, and supported only a single drive connected to it.
|
|
|
|
Luckily, the adapter was nothing more than a ripoff of the original Apple Disk II interface with some changes to adapt it to the TK2000 bus, so, starting with the
|
|
[recreation by btb](https://github.com/btb/DiskII) as a base, I converted the original interface back to the TK2000, gaining support for a second floppy disk and
|
|
configurable (via jumpers) I/O and ROM addresses.
|
|
|
|
|
|
|
|
## Hardware
|
|
|
|
The board was designed with [KiCad](https://kicad.org/) EDA.
|
|
|
|
### Bill of Materials
|
|
|
|
| Component | Qty | Type / Value | Notes |
|
|
| ---------------------- | --- | ------------------------------------------------------- | -------------------------------------------------------------------- |
|
|
| U1, U2 | 2 | 74LS138 DIP-14 | |
|
|
| U3, U8 | 2 | 27C32/64/128/256/512 | Any of these EPROMS will work, as long as the access time is <=100ns |
|
|
| U4 | 1 | 74LS259 DIP-16 | |
|
|
| U5 | 1 | 74LS05 DIP-14 | |
|
|
| U6 | 1 | NE555P or compatible DIP-8 | |
|
|
| U7 | 1 | 74LS132 DIP-14 | |
|
|
| U9 | 1 | 74LS323 DIP-20 | |
|
|
| U10 | 1 | 74L174 DIP-16 | |
|
|
| Q1 | 1 | 2N3096 TO-92 | |
|
|
| C1, C9 | 2 | 22uF/16V+ 2.5mm electrolytic capacitor | |
|
|
| C2 - C8 | 7 | 100bF/25V+ 5.0mm ceramic caps | |
|
|
|
|
|
|
#### The ROMs
|
|
|
|
**TODO**
|
|
|
|
### Configuring the address
|
|
|
|
**TODO**
|
|
|
|
### Ordering the boards
|
|
|
|
You can order the board for this project at [PCBWay](https://www.pcbway.com/project/shareproject/TODO.html) and support me or download
|
|
the gerbers and have them printed wherever you like!!!
|
|
|