Comment Re:If you had a hard drive, you aren't old (Score 1) 587
I solved the cost problem... I hand wired a machine a little at a time, took about 1 year. 4k of static ram, Z-80A processor, switches on the front panel and leds to display. Yes, the big cost was the Z-80A at ~$400 but the rest were mainly 74xx chips which were cheap in Bay Area at the time. Then added Hex Display and Hex Keyboard, Then add Video and Keyboard. Finally a 555 timer to change single stepping switch into a "gas petal" - let it run faster or slower as needed to debug.
2 years later bought a Timex/Sinclar with 16k module for about 1/2 the price.
But had wiring was a good way to learn and understand the computer as well as ports and singaling between the chips. It helped when I wrote my first and last C program for IBM PC (not even an XT) to handle communications between two async ports at 9600 baud.
Then again the smalest computer I built was 4bit computer with 256 bytes of memory. All from about 30 74xx chips and another 555 timer.
Good Times.