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Raspberry Pi Pico ZX Spectrum Microdrive Hardware Emulator
Raspberry Pi Pico ZX Spectrum Microdrive Hardware Emulator (https://en.wikipedia.org/wiki/ZX_Microdrive)
Hardware emulation of 8 microdrives for the ZX Spectrum only (no plans to adapt this for the QL). Main features are:
- Supports all 8 Microdrives from one device
- Supports downstream real h/w Microdrives if you replace the level shifter with Schottky diodes, see 2nd circuit diagram below or GitHub for details
- OLED screen with buttons to navigate the menu - includes load, save & format cartridges as well as other options (see menu section below). No additional toolkits, software or connections needed as all managed from the menu
- FAT32 & exFAT supported Micro SD cards up to a theoretical 256TB (I've tested 2GB, 4GB and a lowly 64GB which can easily fit every Spectrum game and program ever made multiple times)
- Reset button just in case (also makes it easier to flash the Pico)
- Buzzer in case you like a buzzing sound to "simulate" the drive motor
- Includes a version of my Z80onMDR tool (https://github.com/TomDDG/Z80onMDR_lite) to make it easy to load Z80 & SNA snapshots on the fly. Very useful as not many actual Microdrives cartridges released commercially.
- Can copy the contents of a TAP to a blank Virtual Microdrive Cartridge
- Fully powered from the Spectrum & boots instantly
- Unfortunately you do still need an IF1 (https://en.wikipedia.org/wiki/ZX_Interface_1)
Load up the SD card with all your favourite games and programs and enjoy hours of nostalgia with the blistering 15kB/sec transfer rate. Yes you can now load a game in a few seconds!
Quick short off it in action https://youtube.com/shorts/1t1uLbgz_Y4?feature=share
For full details of the project including BoM please see the GitHub site
* 1st Nov 2023 - I've updated the PCB to v1.3 which adds the ability to use OLEDs with GND & VCC reversed. It also extends the PCB edge on one side so you are no longer able to incorrectly connect a ribbon cable where you should be using the correct connector block when joining to a real h/w Microdrive.
* 27th Jan 2023 - I've updated the PCB to v1.2 which is purely a cosmetic change from v1.1 with the removal of the BOB level shifter.
![PicoDriveZX_Circuit_v4a.png](https://pcbwayfile.s3.us-west-2.amazonaws.com/web/23/02/10/0155490595175.png)
Raspberry Pi Pico ZX Spectrum Microdrive Hardware Emulator
*PCBWay community is a shared platform and we are not responsible for any design issues.
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Florin Jul 13,2024
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Engineer Apr 05,2024
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(DIY) C64iSTANBUL Nov 08,2022
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Robert Morrison Nov 08,2022
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