Dear levosretrocomputerprojects.co.uk administrator, Your posts are always a great source of information.
If you are after one then please get in touch via AmiBay . Details are on the contact page .
Ohh I'm just going throught a simiar process, I've re-mixed a flash rom to break out A17 because the A1200…
Hello Vin, Can you share your Online Bill of Materials? with link to the parts? Thanks
Author Archives: levoman
ZX81 Ram Pack Issue 3 4164 update
Goal:- Replace 4116 chips with 4164 chips and make pack more reliable. Please note that this will not give you more ram even though 4164’s are 64k the ram pack is only designed to address 16k. Got a Rampack to … Continue reading
Posted in ZX81
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A590 PSU
A590 PSU schematic The A590 is a bit of a confusing power supply , as it looks just like an AMIGA power supply but without a power switch . It also has a round Din type plug on the lead … Continue reading
Posted in Amiga
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DIY Cart+ – 1.Build it
The Home of the VECTREX DIY Cart+ Project to create an easy to build version of the vectrex selectable rom cartridge. The idea behind this project came from the multitude of multi-game cartridges for the vectrex. Goals:- display rom no. … Continue reading
Posted in Vectrex
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ZaxxDual cartridge Zaxxon and Super Zaxxon on one cartridge
This project is shared on PCBWay https://www.pcbway.com/project/shareproject/C64_ZaxxDual.html While working on a project to replace the PLA in one of my Commodore64’s I came across the fact that the game cartridge ‘Super Zaxxon’ seemed to fail unless the PLA substitute was very … Continue reading
Posted in C64
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ZX81 Peripheral supply pcb
Update : Now includes cad designed pcb The object of this project is to give the +5v and +9v supply to power ZX81 peripherals without a ZX81. For this project you will need :- Some Veroboard 10uf 16v capacitor 7805 … Continue reading
Posted in ZX81
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A590 20Mhz mod
When doing the 14Mhz mod on my A590 I noticed that the controller chip is capable of 20Mhz , so why not do that instead! First of all how I did the 14Mhz mod. Updated the roms to V7.0 ( … Continue reading
Posted in Amiga
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DIY Cart+ – 2.Programming the Arduino
I have created a seperate page for this job , as it is fairly long winded but simple to do. Now you need to download the arduino IDE if you do not already have it. It is on the microsoft … Continue reading
Posted in Vectrex
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C64 ROM to PLA adapter
This project is shared on PCBWay https://www.pcbway.com/project/shareproject/C64 PLA to ROM adapter.html I have been looking at this project for a while and there are several boards around , however nobody has shared them so i decided to create my … Continue reading
DIY Cart+ – 3.Let’s make a ROM
Probably the hardest part to understand , but , you do not have to understand it to do it! Now we need to make a .bin file to program the EPROM that you have chosen ( or have laying around!) … Continue reading
Posted in Vectrex
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Simple AMIGA1200 kickstart switcher
The amiga 1200 uses 2 128kx16bit Mask ROMs for it’s kickstart ( the hardware initialisation routines and drivers ) and there is lot’s of information about burning new kickstarts with the 27C400 UV EPROM . This chip is twice the size needed … Continue reading
Posted in Amiga
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Thanks for finally talking about > ZaxxDual cartridge Zaxxon and Super Zaxxon on one cartridge | Levo's Retro Computer Projects…