Levo's Retro Computer Projects

Keeping the past alive.

Born in 1964 i have been playing with electronics since the age of twelve. Built my own ZX80 in 1980 and moved on to the ZX81 in 1981. From there i went on to the spectrum 48k while playing and programming with my friend on his Dragon 32 . Next in line and the best of the 8 bits the C64 where i learned to hack and program in machine code . My only real way to go from the C64 was on to the Commodore AMIGA , the computer i have had the most fun with . Currently playing with FPGA , Arduino and RaspberryPi's


Started my qualifications at Milton Keynes Skill Center with City and Guilds 224 part 1 , part 2 , and 2 x Part 3 . An ONC course at COLEG POWYS in Newtown in Wales.
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ZX81 Ram Pack Issue 1 4164 Update

ZX81 Ram Pack Issue 1 4164 Update

How to instruction for replacing 4116 Dram chips with 4164 chips and eliminating the unreliable voltage generator circuit. in an issue 1 ram pack and replace the annoying ribbon cable with pin/socket strip.

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ZX81 Ram Pack Issue 3 4164 update

ZX81 Ram Pack Issue 3 4164 update

How to instruction for replacing 4116 Dram chips with 4164 chips and eliminating the unreliable voltage generator circuit. in an issue 3 ram pack.

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ZX81 peripheral supply PCB

ZX81 peripheral supply PCB

PCB to provide power supply for peripheral without connecting to ZX81. Mainly used to check RamPack voltages.

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