PCB and ROMs) were accounted for. Components were provided by various manufacturers and suppliers: MIPRO and Elektronika from Buje, together with Institut za elektroniku i vakuumsku tehniku (en. Institute for electronics and vacuum technology) delivered PCBs, keyboards and masks Mikrotehnika from Graz sent integrated circuits Voja Antonić personally programmed all EPROMs Galaksija collected requisition forms and organized deliveries Later, Institute for school books and teaching aids together with Elektronika Inženjering started mass commercial production of Galaksija computers, mainly to be delivered to schools. Technical specifications CPU: Zilog Z80A 3.072 MHz ROM "A" or "1" – 4 KB (2732 EPROM) contains bootstrap, core control and Galaksija BASIC interpreter code ROM "B" or "2" – 4 KB (optional, also 2732 EPROM) – additional Galaksija BASIC commands, assembler, machine code monitor, etc. Character ROM – 2 KB (2716 EPROM) contains character definitions, characters are 8 x 13 pixels, the block graphics were vertically divided in a 4:5:4 scheme, and horizontally in a 4:4 scheme. RAM: 2 to 6 KB of 6116 static RAM in base model, expandable to 54 KB Text mode 32 x 16 characters, monochrome Pseudographics: 2x3 dot matrix combinations in graphic character subset – 64x48 dots total. Sound: None according to specifications, but tape interface was occasionally used as audio output port – like the "EAR" port on ZX Spectrum can be used both as audio and cassette tape interface. See cassette port for details. Storage media: cassette tape, recording at 280 bit/s rate I/O ports: 44-pin edge connector with Z80 Bus, tape (DIN connector), monochrome video out (PAL timings, DIN connector), and UHF TV out (RCA connector) BASIC ROMs Galaksija BASIC is a BASIC interpreter originally partly based on code taken from TRS-80 Level 1 BASIC, which the creator believed to have been a Microsoft BASIC. However, after extensive modifications to include video generation code (as the CPU was a major participant to reduce the cost of hardware) and improve the programming language, what remained from the original is said to be mainly flow-control and floating point code. It was fully contained in 4 KB ROM "A" or "1". Additional ROM "B" or "2" provided more Galaksija BASIC commands, assembler, monitor, etc. ROM "A" The chip labeled as "A" by the creator of Galaksija, Voja Antonić was commonly referred to as "ROM 1" or just "ROM". ROM "A" contained bootstrap code of Galaksija, its control code (rudimentary operating system),