New prototype ZX-deluxe+
Posted: Thu Dec 03, 2020 12:04 pm
Hello ZX81 fans,
I had some discussions with Siggi about the ZX-deluxe and made some improvements and now have a working prototype of the ZX-deluxe+. The specs are:
-Integrated full moving keyboard with cherry keys.
-Zxpand SD card drive.
-Joystick interface which can be reconfigured to every key..
-Internet interface Zeddynet with WIZ8121MJ module.
-Why Wait ? Circuit for 10% speed gain. Can be switched off.
-M1-NOT circuit to load machine code above address 32768. Can be swiched off.
-Modern DC-DC converter from Recon for a stable and cool power supply.
-100% compatible with the standard ZX81.
-Crisp and stable composite video out signal.
-2x jack connections for saving and loading old tape images.
-64K RAM.
-ZX81 compatible edge connector.
-6 easy to adjust switches for inverse video, Border, NTSC/PAL, ROM selection and more.
-Extra connection on PCB for connecting another keyboard , but why should you?
-Ear and Mic input and output to load from tape cassette if needed.
-Reset switch
-Power ON / OFF switch
-Zxpand ROM overlay on/off switch to go to standard ZX81 mode or use the SD card Save and Load routines.
I have made this design because I wanted a single board ZX81 computer with all the improvements in one compact design. It is bigger then the original ZX81 (24.5cm x 22 cm) but still not to big.
The ZX-deluxe is in its prototype stage and I was wondering if there are others who would be interested in this design. I can offer it as a building kit and against a higher price a completly build one. All in all it will be more expensive then the standard ZX-deluxe but will include a better Keyboard and the Wiznetmodule for Zeddynet.
You only will have to cut out all the keyboard stickers with a scissor. It will be delivered with a printed keyboard on transparant sticker sheets but you have to cut the keys out yourself.
I had some discussions with Siggi about the ZX-deluxe and made some improvements and now have a working prototype of the ZX-deluxe+. The specs are:
-Integrated full moving keyboard with cherry keys.
-Zxpand SD card drive.
-Joystick interface which can be reconfigured to every key..
-Internet interface Zeddynet with WIZ8121MJ module.
-Why Wait ? Circuit for 10% speed gain. Can be switched off.
-M1-NOT circuit to load machine code above address 32768. Can be swiched off.
-Modern DC-DC converter from Recon for a stable and cool power supply.
-100% compatible with the standard ZX81.
-Crisp and stable composite video out signal.
-2x jack connections for saving and loading old tape images.
-64K RAM.
-ZX81 compatible edge connector.
-6 easy to adjust switches for inverse video, Border, NTSC/PAL, ROM selection and more.
-Extra connection on PCB for connecting another keyboard , but why should you?
-Ear and Mic input and output to load from tape cassette if needed.
-Reset switch
-Power ON / OFF switch
-Zxpand ROM overlay on/off switch to go to standard ZX81 mode or use the SD card Save and Load routines.
I have made this design because I wanted a single board ZX81 computer with all the improvements in one compact design. It is bigger then the original ZX81 (24.5cm x 22 cm) but still not to big.
The ZX-deluxe is in its prototype stage and I was wondering if there are others who would be interested in this design. I can offer it as a building kit and against a higher price a completly build one. All in all it will be more expensive then the standard ZX-deluxe but will include a better Keyboard and the Wiznetmodule for Zeddynet.
You only will have to cut out all the keyboard stickers with a scissor. It will be delivered with a printed keyboard on transparant sticker sheets but you have to cut the keys out yourself.