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my first computer was a nameless home-brew system based on a 6502, but never got finished because I bought a KIM-1 and later a LMW-80.
my first computer was a nameless home-brew system based on a 6502, but never got finished because I bought a KIM-1 and later a LMW-80.


I worked for a small hobby computer company, and among many other things sold Apple ]['s, ABC80's and Olivetti M80 systems, but also many kits. Like the Junior Computer (a KIM-1 clone), the Acorn Atom and also ZX80 kits. Many of them I assembled for customers who wanted them assembled. For owners of ZX80's I would buit in ZX81 ROM's. I also built 48K RAM and our own Floppy disc controller and Centronics printer interface into TRS-80 base systems, which was much cheaper than buying an expansion interface. Later I designed my own Z80 computer, a Tandy TRS-80 clone that also ran CP/M perfectly.
I worked for a small hobby computer company, and among many other things sold Apple ]['s, ABC80's and Olivetti M80 systems, but also many kits. Like the Junior Computer (a KIM-1 clone), the Acorn Atom and also ZX80 kits. Many of them I assembled for customers who wanted them assembled. For owners of ZX80's I would buit in ZX81 ROM's. I also built 48K RAM and our own Floppy disc controller and Centronics printer interface into TRS-80 base systems, which was much cheaper than buying an expansion interface. Later I designed and sold my own Z80 computer, a much improved Tandy TRS-80 model 1 clone that also ran CP/M perfectly.
 
 
I have been collecting old home computers since forever (actually the start was the three versions of the Aster CT-80 I ended up with after Aster went bankrupt), and I got many from the about ten years I worked for a charity thrift store. but even before that I had many systems.
I was always on the lookout for a safe place to give them to for eternity. As in April 2, 2015 (on good friday) I gave all my gaming stuff away to "awesomeretro" ( http://awesomeretro.nl). disappointingly they never wrote about my large donation on their site, but if you look at this picture, (made shortly afterwards) you can see some of the stuff I donated on the table through the door opening: http://awesomespace.nl/wp-content/uploads/sites/14/2015/04/awesomespace-tactical-unit.jpg
 
here is a list of what I gave to them on permanent loan:
 
Atari 800 XL, zonder kabels
 
Philips MSX NMS 8245
 
Tokio color 4 pong, in doos
 
atari 2600jr in doos
 
Acorn electron met expansie
 
MSX VG 8020
 
Atari 600XL (met 600 naar 800omgecat)
 
BBC micro
 
MSX Sv1 - spectravidea
 
Dragon 32
 
Snes met kabels enzo
 
Supervision + crystball
 
2600 6sw
 
gamegear sega
 
audiosonic pong clone (needs tlc)
 
intellivision, compleet
 
sinclair zx spectrum+ 128k
 
schach-computer
 
cougarboy in doos + streetrider + magic tower + arctic zone
 
sega megadrive
 
sega megadrive2
 
supervision in doos
 
intellivision in doos + burger time + astrosmash + tennis + space hawk + space battle + soccer + astrosmash (doosje met boekjes)
 
vic-20 met 16k ram cartridge
 
commodore 16 (missing 8 key)
 
commodore amiga 1200
 
sharp mz-800 met tape drive
 
sega megadrive 2 in doos
 
philips videopac g7000 compleet
 
bit90 (laser2000 clone)
 
zx spectrum+ in doos
 
coleco vision met voeding
 
radioshack TRS-80
 
MB comp IV
 
apple IIc
 
atari 260st
 
sharp mz-700
 
c16 met game controller adapter
 
vic-20 missing 1 key
 
vic-20 missing 2 key met "voeding"
 
commodore 116
 
commodore plus/4
 
zx spectrum in dekatronix kast (rom wonder van resoft)
 
newbrain (spectrum met ram expansion en rom switcher)
 
svi MSZ compleet in tasje
 
acorn electron
 
sanyo MSX mpc100
 
nintendo 64 met wat kabelwerk
 
philips MSX nms8245 (missing keys)
 
philips MSX vg8235 (met zonder missing keys)
 
super nintendo met copyfloppy interface en cd aansluiting en kabels en controllers (1 fake, 1 real thang)
 
laser 500 color computer
 
toshiba t1000
 
sony hitbit MSX2
 
mattel aquarius in doos met mini expander in doos
 
laser 500 in koffer, met scheidegger institute curses
 
TI 99a
 
acorn atom
 
BBC micro
 
enterprise 64 in doos
 
BBC micro (acorn) vigler
 
como pc1
 
sinclair zx80
 
zx spectrum+ met interface module
 
CPC 64-4 met floppy
 
sinclair QL in doos
 
sinclair QL in doos met handvat
 
videomaster enterprise in doos
 
odyssey 2001
 
SVI 728 MSX
sharp MZ-80a met monitor ingebouwd
 
amiga 500 in doos
 
commodore 610
 
exidy sorcerer compleet in blingbling koffer
 
philips p2000 compleet in doos, familiegeheugen, basic interpreter 16k, boekje
 
atari portfolio
 
atari mega ste met keyboard en monitor
 
lobo max-80
 
laser 3000
 
zx spectrum compleet met microdrive en interface one
 
zx-81 met 16kb expansion pack
 
zx spectrum interface 1
 
zx spectrum
 
radofin telesports
 
audiosonic pp920
 
megadrive2 + voeding + controllers
 
 
accesories:
 
sega rf adapter
 
cdi 450 voeding
 
2 scart blokjes
 
5pind naar tulp/jack
 
dreamcast vga adapter
 
nep cd32 controller
 
qtec 5.25 floppy drive (amiga?)
 
controller voor g9000
 
MSX MIDI module
 
MSX viditel modem mix
 
parallel interface mix
 
livetek eraser game controller (joystick)
 
VIC-20 16k ram cartridge
 
stofkap amiga 1200
 
grote atari adapter
 
duo floppy voor atari st
 
MSX floppy disk drive 5.25"
 
Sony MSX floppy disk drive 5.25"
 
zx spectrum joystick adapter
 
2x dreamcast doos
 
2 sega megadrive controllers
 
voeding sega megadrive
 
rf kabel
 
trs-80 color joystick in doos
 
dragon32 voeding
 
dragon32 tape kabel
 
yamaha keytar (shs 10)
 
gamecube doos
 
n64 controller groen
 
n64 pokemon stadium
 
commodore 1532 datasette
 
commodore datasette voor de PET
 
schneider ctm 640 monitor
 
pace micro floppy disk 5.25 (40/80 track)
 
dreamcast memory unit doosje
 
nintendo expansion pack
 
n64 king kong
 
n64 rf modulator
 
nes controller
 
nes voeding
 
tv encoder voor een texas home computer
 
2maal quick shot Joystick
 
TRS-80 voeding
 
sinclair voeding
 
een atari voeding
 
TI voeding
 
externe hd amiga
 
atari sh204 hd
 
trs-80 monitor
 
trs-80 keyboard
 
 
 
monitors:
 
philips cm8833
 
ankona kg733
 
philips computer monitor 80
 
atari sm125
 
apple IIc monitor
 
 
books:
 
diverse manuals
 
cd-i een introductie
 
doom
 
 
Games / software:
 
megadrive jungle book
 
megadrive sonic compilation
 
megadrive fantastic dizzy
 
megadrive wolrdcup italia'90
 
megadrive sonic2
 
megadrive mortal kombat
 
mouse trap colecovision
 
quake3 test
 
Sega pac-mania game
 
Videopac 18, 1, 38,
 
MT-Base, MSX databasesysteem
 
Manic minder zonder casette
 
FInders keeprs, MSX tape
 
Sharp basic MZ700
 
Lazer war zx spectrum
 
Sharp MZ het bolwerk
 
Sharp mz 800,27
 
Sharp MZ uniggb drie domino
 
MZ system program manual
 
pijama rama zx spectrum
 
video edidtor voor mz 800
 
pascal voor sharp
 
roland on the ropes game
 
sharp basic s basic compiler
 
c16 spellen cassette verzameling
 
micro mouse, ghost debugging voor spectrum
 
cyber rats
 
basic introductie cursus C16
 
acorn Haushaltbudget
 
acorn peeko computer
 
Venture colecovision
 
Submarine commander voor Vic20
 
Zelda 2 adventure of link - NES
 
legend of zelda NES
 
Super mario 2, NES
 
EProm pac voor exidy sourcerer
 
roadblasters voor lynx
 
2600 combat
 
donkey kong Coleco vision
 
cosmic avenger 2600
 
missile command 2600
 
Cosmic crusher voor vic 20
 
Space invaders 2600
 
Pac man 2600
 
S-ram pac atrac casette...voor exidy
 
legend of zelda NES
 
C language Vic 20
 
8 k ram Vic
 
star battle Vic
 
supervision crystball
 
supervision soccer champion
 
supervision crystball
 
supervision dancing block
 
supervision soccer champion
 
suppervision tennis pro 92
 
2600 ET
 
frogger colecovision
 
32 in 1 2600
 
jungle kong lcd dingetje
 
pokemon pinball voor gameboy (extended)
 
atari 600SE game
 
super mario N64
 
maraio brothers atari XE
 
columns gamegear
 
asteroids 2600
 
adventure 2600
 
super mario world
 
argo fake nintendo 64 compleet
 
ending man met handleiding (licht beschadigd)
 
megaduck
 
megaduck magic tower
 
megaduck black forest tale
 
megaduck warm visitor
 
megaduck railway
 
megaduck the brick wall
 
megaduck 4-in-1
 
gamegear choplifter III
 
megaduck streetrider
 
gameboy tazmania
 
gameboy rayman
 
msx mt-base cartridge
 
2600 circus atari
 
coleco vision space panic
 
cvs zaxxon
 
n64 pokemon snap
 
zx spectrum horizons
 
n64 super mario world
 
n64 quake
 
n64 zelda
 
nepconsole 250-in-1
 
nepconsole nyankies
 
nepconsole 12-in-1
 
nepconsole 42-in-1
 
colecovision looping
 
super nintendo paper boy 2 in doos
 
nes mario woods in doos
 
gamegear sonic 2
 
megaduck grand prix
 
MSX mt-debug
 
megaduck carrier
 
colecovision gorf
 
megaduck 2-in-1
 
megaduck honeybee
 
spectrum hurg
 
nes faxanadu (in doos)
 
MSX flight simulator with torpedo attack
 
MSX hunchback
 
braindamage
 
2 keer mz canyon goldrush
 
MSX 6-in-1
 
MSX sorcery
 
doosje met 15 tapes (brownbag)
 
vic-20 raid on fort knox
 
amiga amos the creator (alleen doosje)
 
coleco ladybug
 
coleco space panic
 
coleco donkey kong jr
 
coleco turbo
 
coleco microfun
 
coleco donkey kong
 
dragon32 dataplan
 
dragon32 berzerk
 
dragon32 schaken
 
dragon32 textstar
 
dragon32 golf
 
dragon32 astro blast
 
dragon32 ghost attack
 
super nintendo street fighter II
 
MSX manic miner
 
CPC oh mummy
 
CPC nasi amsword
 
CPC sultan's mate
 
CPC bridge-it
 
CPC timeman one
 
CPC ghostbusters / music composer
 
CPC hangman
 
CPC galactic plague
 
CPC various
 
CPC fruit machine
 
CPC animal vegetable mineral
 
CPC 464 os & firmware
 
CPC roland in the caves
 
CPC harrier attack
 
CPC floppy-achtig ding
 
color 12-in-1 doosje
 
n64 v-rally edition 99
 
megadrive smurfen
 
megadrive earth defense
 
megadrive sonic spinball
 
megadrive mickey mania
 
megadrive sonic I
 
megadrive sonic II
 
megadrive shadow dancer4
 
videopac 27
 
videopac 43
 
videopac 26
 
videopac 19
 
videopac 1
 
videopac 38
 
videopac 24
 
doos met bbc micro games
 
sharp applications tape
 
sega megadrive kick-off 3
 
svi-727 video uitbreiding voor mix
 
I still had about 80 "non gaming" systems, such as my Aster CT-80 collection, and many others such as an Apple 3 with hard-disk, for which awesome space had no interest. These went to the Bonami Computer Museum in Zwolle.
I still have a few PET computers at home, with a dual floppy unit and a P2000, all of which I repaired, or will repair in the future.
 
 
response to 2022 - HomeComputerMuseum, the making, the challenges and the importance:
 
Hi BOB, let me introduce myself, I'm Martin de jong, AKA Mahjongg. I'm a retired* electronic engineer, or more specific a Layout engineer, and in 1980 I was one of the designers of the Dutch Computer Aster CT-80, a TRS-80 model 1 clone. I'm a retro computer collector, and had at one time over 160 computers. I thought about starting my own computer museum, but I'm not a business person, so I decided that before something happened and all my computers would end up in a landfill, a had to find a secure place for them, so at first I came into contact with awesomespace in Utrecht, you might know it, they had a small "computer museum", and I decided to give them all my computers that have a gaming character, instead of a Business character, that were about eighty, a list of them you can find here: https://revspace.nl/User:Mahjongg
A couple of year later, with a sleeping room still filled with nearly a hundred more computers, including three different types of the Aster-CT80 I donated those to a computer museum in Zwolle, A town where I lived for a long time, you might know it. The Bonamy computer museum. But in the mean time I moved many times and lived in a number of cities considered to be in "de randstad", specifically in south holland, in Arkel, Papendrecht and Dordrecht, and now I have live in Zoetermeer for 20 years or so. As said I'm "retired", but that is in practice not yet legally, as shortly after corona started I was fired from my last job, at SystematIC, where I designed test equipment for the IC's that systematIC designed, and I also did some chip design, and a bit of space electronics. so I went into quarantine and after some time my health worsened considerably, my asthma became much worse, and I got symptoms I can only describe as having "long covid", including becoming less able to do high tech stuff. That is why I am not expecting to get a job again, and in April 2023 I will officially retire, I'm 66 now. But electronics is still my hobby, and I'm still very much into Retro Computers, so at my maker space I had designed several small systems, along which a ZX-81 clone which I named ZX81+38, its the successor of my earlier clone the ZX81+35, for which I designed my own ULA replacement logic.  My second clone is designed with only pin though hole logic, and fits into the original ZX-81 enclosure.
Also I still help repairing retro computers and game consoles, as I did for awesome space, here in Zoetermeer for the national Game computer museum, which has a small home computer selection, we have the most popular home computers here working, and game systems like the vectrex and the atari 7800, both of which I have repaired, but we also have a Philips NMS MSX computer, a Sinclair spectrum, and obviously a Commodore 64, all in working order with a game you can play built into them or able to load into them, I'm busy trying to fit a TZXDuino into our spectrum, as a replacement for the cartridge based game that it now starts up with.
The Boss of the museum (Hassan) has asked me to accompany him with a trip to visit Helmond so I hopefully we will meet.
 
P.S. I had hoped I could visit MCH2022, just like I visited SHA2017, where I was showing my CBM 4032 (PET) but my health at the moment, (and finances) don't allow it, so I am at home watching some interesting talks at home, missing the Club-Mate spiced with Vodka, and the tents where i could learn kids to solder their badges.  Hopefully my health will recover in time so I can go in 2025.

Latest revision as of 20:20, 24 July 2022

I am an electronic engineer, (of Dutch descend) specialized in designing PCB's for Analog, Digital and to a lesser degree RF systems. In the past I have designed (among many other things) Computers and computer subsystems, modems and audio recording equipment, satellite subsystems and cryogenic electronics. I am fond of retro computing, and own a collection of retro computers, and literature about retro computing.


my first computer was a nameless home-brew system based on a 6502, but never got finished because I bought a KIM-1 and later a LMW-80.

I worked for a small hobby computer company, and among many other things sold Apple ]['s, ABC80's and Olivetti M80 systems, but also many kits. Like the Junior Computer (a KIM-1 clone), the Acorn Atom and also ZX80 kits. Many of them I assembled for customers who wanted them assembled. For owners of ZX80's I would buit in ZX81 ROM's. I also built 48K RAM and our own Floppy disc controller and Centronics printer interface into TRS-80 base systems, which was much cheaper than buying an expansion interface. Later I designed and sold my own Z80 computer, a much improved Tandy TRS-80 model 1 clone that also ran CP/M perfectly.


I have been collecting old home computers since forever (actually the start was the three versions of the Aster CT-80 I ended up with after Aster went bankrupt), and I got many from the about ten years I worked for a charity thrift store. but even before that I had many systems. I was always on the lookout for a safe place to give them to for eternity. As in April 2, 2015 (on good friday) I gave all my gaming stuff away to "awesomeretro" ( http://awesomeretro.nl). disappointingly they never wrote about my large donation on their site, but if you look at this picture, (made shortly afterwards) you can see some of the stuff I donated on the table through the door opening: http://awesomespace.nl/wp-content/uploads/sites/14/2015/04/awesomespace-tactical-unit.jpg

here is a list of what I gave to them on permanent loan:

Atari 800 XL, zonder kabels

Philips MSX NMS 8245

Tokio color 4 pong, in doos

atari 2600jr in doos

Acorn electron met expansie

MSX VG 8020

Atari 600XL (met 600 naar 800omgecat)

BBC micro

MSX Sv1 - spectravidea

Dragon 32

Snes met kabels enzo

Supervision + crystball

2600 6sw

gamegear sega

audiosonic pong clone (needs tlc)

intellivision, compleet

sinclair zx spectrum+ 128k

schach-computer

cougarboy in doos + streetrider + magic tower + arctic zone

sega megadrive

sega megadrive2

supervision in doos

intellivision in doos + burger time + astrosmash + tennis + space hawk + space battle + soccer + astrosmash (doosje met boekjes)

vic-20 met 16k ram cartridge

commodore 16 (missing 8 key)

commodore amiga 1200

sharp mz-800 met tape drive

sega megadrive 2 in doos

philips videopac g7000 compleet

bit90 (laser2000 clone)

zx spectrum+ in doos

coleco vision met voeding

radioshack TRS-80

MB comp IV

apple IIc

atari 260st

sharp mz-700

c16 met game controller adapter

vic-20 missing 1 key

vic-20 missing 2 key met "voeding"

commodore 116

commodore plus/4

zx spectrum in dekatronix kast (rom wonder van resoft)

newbrain (spectrum met ram expansion en rom switcher)

svi MSZ compleet in tasje

acorn electron

sanyo MSX mpc100

nintendo 64 met wat kabelwerk

philips MSX nms8245 (missing keys)

philips MSX vg8235 (met zonder missing keys)

super nintendo met copyfloppy interface en cd aansluiting en kabels en controllers (1 fake, 1 real thang)

laser 500 color computer

toshiba t1000

sony hitbit MSX2

mattel aquarius in doos met mini expander in doos

laser 500 in koffer, met scheidegger institute curses

TI 99a

acorn atom

BBC micro

enterprise 64 in doos

BBC micro (acorn) vigler

como pc1

sinclair zx80

zx spectrum+ met interface module

CPC 64-4 met floppy

sinclair QL in doos

sinclair QL in doos met handvat

videomaster enterprise in doos

odyssey 2001

SVI 728 MSX sharp MZ-80a met monitor ingebouwd

amiga 500 in doos

commodore 610

exidy sorcerer compleet in blingbling koffer

philips p2000 compleet in doos, familiegeheugen, basic interpreter 16k, boekje

atari portfolio

atari mega ste met keyboard en monitor

lobo max-80

laser 3000

zx spectrum compleet met microdrive en interface one

zx-81 met 16kb expansion pack

zx spectrum interface 1

zx spectrum

radofin telesports

audiosonic pp920

megadrive2 + voeding + controllers


accesories:

sega rf adapter

cdi 450 voeding

2 scart blokjes

5pind naar tulp/jack

dreamcast vga adapter

nep cd32 controller

qtec 5.25 floppy drive (amiga?)

controller voor g9000

MSX MIDI module

MSX viditel modem mix

parallel interface mix

livetek eraser game controller (joystick)

VIC-20 16k ram cartridge

stofkap amiga 1200

grote atari adapter

duo floppy voor atari st

MSX floppy disk drive 5.25"

Sony MSX floppy disk drive 5.25"

zx spectrum joystick adapter

2x dreamcast doos

2 sega megadrive controllers

voeding sega megadrive

rf kabel

trs-80 color joystick in doos

dragon32 voeding

dragon32 tape kabel

yamaha keytar (shs 10)

gamecube doos

n64 controller groen

n64 pokemon stadium

commodore 1532 datasette

commodore datasette voor de PET

schneider ctm 640 monitor

pace micro floppy disk 5.25 (40/80 track)

dreamcast memory unit doosje

nintendo expansion pack

n64 king kong

n64 rf modulator

nes controller

nes voeding

tv encoder voor een texas home computer

2maal quick shot Joystick

TRS-80 voeding

sinclair voeding

een atari voeding

TI voeding

externe hd amiga

atari sh204 hd

trs-80 monitor

trs-80 keyboard


monitors:

philips cm8833

ankona kg733

philips computer monitor 80

atari sm125

apple IIc monitor


books:

diverse manuals

cd-i een introductie

doom


Games / software:

megadrive jungle book

megadrive sonic compilation

megadrive fantastic dizzy

megadrive wolrdcup italia'90

megadrive sonic2

megadrive mortal kombat

mouse trap colecovision

quake3 test

Sega pac-mania game

Videopac 18, 1, 38,

MT-Base, MSX databasesysteem

Manic minder zonder casette

FInders keeprs, MSX tape

Sharp basic MZ700

Lazer war zx spectrum

Sharp MZ het bolwerk

Sharp mz 800,27

Sharp MZ uniggb drie domino

MZ system program manual

pijama rama zx spectrum

video edidtor voor mz 800

pascal voor sharp

roland on the ropes game

sharp basic s basic compiler

c16 spellen cassette verzameling

micro mouse, ghost debugging voor spectrum

cyber rats

basic introductie cursus C16

acorn Haushaltbudget

acorn peeko computer

Venture colecovision

Submarine commander voor Vic20

Zelda 2 adventure of link - NES

legend of zelda NES

Super mario 2, NES

EProm pac voor exidy sourcerer

roadblasters voor lynx

2600 combat

donkey kong Coleco vision

cosmic avenger 2600

missile command 2600

Cosmic crusher voor vic 20

Space invaders 2600

Pac man 2600

S-ram pac atrac casette...voor exidy

legend of zelda NES

C language Vic 20

8 k ram Vic

star battle Vic

supervision crystball

supervision soccer champion

supervision crystball

supervision dancing block

supervision soccer champion

suppervision tennis pro 92

2600 ET

frogger colecovision

32 in 1 2600

jungle kong lcd dingetje

pokemon pinball voor gameboy (extended)

atari 600SE game

super mario N64

maraio brothers atari XE

columns gamegear

asteroids 2600

adventure 2600

super mario world

argo fake nintendo 64 compleet

ending man met handleiding (licht beschadigd)

megaduck

megaduck magic tower

megaduck black forest tale

megaduck warm visitor

megaduck railway

megaduck the brick wall

megaduck 4-in-1

gamegear choplifter III

megaduck streetrider

gameboy tazmania

gameboy rayman

msx mt-base cartridge

2600 circus atari

coleco vision space panic

cvs zaxxon

n64 pokemon snap

zx spectrum horizons

n64 super mario world

n64 quake

n64 zelda

nepconsole 250-in-1

nepconsole nyankies

nepconsole 12-in-1

nepconsole 42-in-1

colecovision looping

super nintendo paper boy 2 in doos

nes mario woods in doos

gamegear sonic 2

megaduck grand prix

MSX mt-debug

megaduck carrier

colecovision gorf

megaduck 2-in-1

megaduck honeybee

spectrum hurg

nes faxanadu (in doos)

MSX flight simulator with torpedo attack

MSX hunchback

braindamage

2 keer mz canyon goldrush

MSX 6-in-1

MSX sorcery

doosje met 15 tapes (brownbag)

vic-20 raid on fort knox

amiga amos the creator (alleen doosje)

coleco ladybug

coleco space panic

coleco donkey kong jr

coleco turbo

coleco microfun

coleco donkey kong

dragon32 dataplan

dragon32 berzerk

dragon32 schaken

dragon32 textstar

dragon32 golf

dragon32 astro blast

dragon32 ghost attack

super nintendo street fighter II

MSX manic miner

CPC oh mummy

CPC nasi amsword

CPC sultan's mate

CPC bridge-it

CPC timeman one

CPC ghostbusters / music composer

CPC hangman

CPC galactic plague

CPC various

CPC fruit machine

CPC animal vegetable mineral

CPC 464 os & firmware

CPC roland in the caves

CPC harrier attack

CPC floppy-achtig ding

color 12-in-1 doosje

n64 v-rally edition 99

megadrive smurfen

megadrive earth defense

megadrive sonic spinball

megadrive mickey mania

megadrive sonic I

megadrive sonic II

megadrive shadow dancer4

videopac 27

videopac 43

videopac 26

videopac 19

videopac 1

videopac 38

videopac 24

doos met bbc micro games

sharp applications tape

sega megadrive kick-off 3

svi-727 video uitbreiding voor mix

I still had about 80 "non gaming" systems, such as my Aster CT-80 collection, and many others such as an Apple 3 with hard-disk, for which awesome space had no interest. These went to the Bonami Computer Museum in Zwolle. I still have a few PET computers at home, with a dual floppy unit and a P2000, all of which I repaired, or will repair in the future.


response to 2022 - HomeComputerMuseum, the making, the challenges and the importance:

Hi BOB, let me introduce myself, I'm Martin de jong, AKA Mahjongg. I'm a retired* electronic engineer, or more specific a Layout engineer, and in 1980 I was one of the designers of the Dutch Computer Aster CT-80, a TRS-80 model 1 clone. I'm a retro computer collector, and had at one time over 160 computers. I thought about starting my own computer museum, but I'm not a business person, so I decided that before something happened and all my computers would end up in a landfill, a had to find a secure place for them, so at first I came into contact with awesomespace in Utrecht, you might know it, they had a small "computer museum", and I decided to give them all my computers that have a gaming character, instead of a Business character, that were about eighty, a list of them you can find here: https://revspace.nl/User:Mahjongg A couple of year later, with a sleeping room still filled with nearly a hundred more computers, including three different types of the Aster-CT80 I donated those to a computer museum in Zwolle, A town where I lived for a long time, you might know it. The Bonamy computer museum. But in the mean time I moved many times and lived in a number of cities considered to be in "de randstad", specifically in south holland, in Arkel, Papendrecht and Dordrecht, and now I have live in Zoetermeer for 20 years or so. As said I'm "retired", but that is in practice not yet legally, as shortly after corona started I was fired from my last job, at SystematIC, where I designed test equipment for the IC's that systematIC designed, and I also did some chip design, and a bit of space electronics. so I went into quarantine and after some time my health worsened considerably, my asthma became much worse, and I got symptoms I can only describe as having "long covid", including becoming less able to do high tech stuff. That is why I am not expecting to get a job again, and in April 2023 I will officially retire, I'm 66 now. But electronics is still my hobby, and I'm still very much into Retro Computers, so at my maker space I had designed several small systems, along which a ZX-81 clone which I named ZX81+38, its the successor of my earlier clone the ZX81+35, for which I designed my own ULA replacement logic. My second clone is designed with only pin though hole logic, and fits into the original ZX-81 enclosure. Also I still help repairing retro computers and game consoles, as I did for awesome space, here in Zoetermeer for the national Game computer museum, which has a small home computer selection, we have the most popular home computers here working, and game systems like the vectrex and the atari 7800, both of which I have repaired, but we also have a Philips NMS MSX computer, a Sinclair spectrum, and obviously a Commodore 64, all in working order with a game you can play built into them or able to load into them, I'm busy trying to fit a TZXDuino into our spectrum, as a replacement for the cartridge based game that it now starts up with. The Boss of the museum (Hassan) has asked me to accompany him with a trip to visit Helmond so I hopefully we will meet.

P.S. I had hoped I could visit MCH2022, just like I visited SHA2017, where I was showing my CBM 4032 (PET) but my health at the moment, (and finances) don't allow it, so I am at home watching some interesting talks at home, missing the Club-Mate spiced with Vodka, and the tents where i could learn kids to solder their badges. Hopefully my health will recover in time so I can go in 2025.