DOS
C64
CPC
SPEC
MSX
APL2
TG16
MSX2
Atari7800
SMS
Atari8bit
Atari5200
colecovision
bbcmicro
vic-20
x1
sg1000
cpet
C16
PC-8800 Series
TRS-80
ti-99
Acorn Electron
PC-9800 Series
TRS-80 Color Computer
FM-7
NEC PC-6000 Series
Sinclair ZX81
Sharp MZ-2200
Tomy Tutor / Pyuta / Grandstand Tutor