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sy2002 edited this page Jan 27, 2024 · 9 revisions

Version 1.2 - January 27, 2024

The main purpose of this release is to support the new 2024 batches of the MEGA65 (aka "R6") as well as the development boards R4 and R5.

Additionally the HDMI compatibility has been improved for all MEGA65 models.

Version 1.1 - November 15, 2023

Improved HDMI compatibility by fixing an edge case where nothing but vertical colored lines were shown on screen. (Fixed GitHub issue https://github.com/sy2002/zxuno4mega65/issues/17)

Version 1.0 - October 24, 2023

This version introduces HDMI support (audio and video) to the core and it allows you to use both SD card slots, while the slot on the back side of the MEGA65 takes precedence over the bottom slot in case two cards are inserted.

Other than that, it is feature-wise identical to Version 0.8, but it no longer supports the older R2 MEGA65 prototypes (if you have an R2, you can still use Version 0.8).

This core is compatible with the R3 (DevKits) and R3A versions of the MEGA65. If you received your MEGA65 before November 2023, you very likely have an R3 or R3A model, making this core suitable for your device.

Version 0.8 - January 2, 2021

Version 0.8 is stable and feature rich. Thanks to ESXDOS and SD card support, loading software is easy. You can play a ton of classic ZX Spectrum games with it, including AY-3-8910 sound. Also most demos and application programs are working. And you can program in 48k BASIC.

  • This core supports the MEGA65 R2 and R3/R3A.
  • It uses VGA for video output and the 3.5mm audio jack for audio output. No HDMI.
  • Insert the SD card that you will prepare below into the internal SD card slot of the MEGA65 (the one in the bottom tray): This is currently the only SD card slot, that this core supports.

Getting Started

The ZX-Uno is not for the faint at heart, so make sure that you go to the ZX-Uno for MEGA65 Wiki and work through all steps of the tutorial.

Here is a list, what works:

  • The ZX-Uno core runs flawlessly (CPU, ULA incl. ULAplus, RAM, ROM, ...)
  • 48k BASIC
  • VGA output
  • Audio via the 3.5mm analog audio jack
  • Keyboard using a convenient mapping
  • Joysticks
  • Ability to emulate a joystick via cursor keys. By default, a Sinclair joystick is emulated.
  • SD-Cards via ESXDOS, but only via the internal SD card slot

Not working yet:

  • HDMI
  • Mouse
  • External SD-Card slot of MEGA65
  • Attaching a real tape player via EAR
  • MIDI
  • UART
  • PZX Player
  • PENTAGON 512k Support
  • Expansion port
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