Thought the retro people might like this - the first computer I built - https://en.wikipedia.org/wiki/Dick_Smith_Super-80_Computer https://en.wikipedia.org/wiki

Thought the retro people might like this - the first computer I built - https://en.wikipedia.org/wiki/Dick_Smith_Super-80_Computer https://en.wikipedia.org/wiki/Dick_Smith_Super-80_Computer. Z80 based 16K ram, yes thats a K. 2MHz processor. Plugged it into a cassette player for storage. Loading programs was hit and miss. I later splurged and bought a Basic ROM, initially you had to program it in Hex. I used it for most of my uni days, running linear regressions for lab. It cost me $300 AUD then, all my school kid savings :-). This was the book I learned assembler on https://www.amazon.com/Programming-Z80-Rodnay-Zaks/dp/0895880695/ref=pd_sim_14_1?_encoding=UTF8&pd_rd_i=0895880695&pd_rd_r=JGJVMVFNRKPHMKR3R4Y8&pd_rd_w=EdHN0&pd_rd_wg=3HMjb&psc=1&refRID=JGJVMVFNRKPHMKR3R4Y8 https://www.amazon.com/Programming-Z80-Rodnay-Zaks/dp/089588... a classic. Edit: It initially had just upper case characters - these were bitmaps stored in a ROM. I later bought an add on board that added lower case characters and graphic characters (like the old PC-DOS characters) contained in another ROM. I think from memory you could also add a RAM chip and load your own programmable characters, though that could have been my imagination. I have vague recollections of trying to figure out ways to make it have graphics that you could move around using the RAM, so I could make my own space invaders game :-)