I revived my dad's old KIM-1 and after looking through the manuals, a spare edge connector and finding the necessary 5V 2A wall wart laying around I got the thing powered up.
Following the KIM-1 manual I enter the "add two numbers" program, move to the start position and hit "GO", and the KIM locks up. I try entering the program a couple more times thinking I just mistyped it somewhere, and even my dad tried entering it in himself and we get the same lock up. Watching it in step by step mode it seems to lock up at memory address 00015 (as I can remember, I'll double check in a little while) and it refuses to go any further.
Other applications I've tried typing in lock up the machine as well - the display just goes blank after hitting GO.
Any ideas? I thought about going through the ROM and checking for corruption, but if that was the case I doubt I would have gotten as far as entering the code in the first place.
My money is on the memory being at fault. I found a box of those chips laying around I could use if that was the case.
Following the KIM-1 manual I enter the "add two numbers" program, move to the start position and hit "GO", and the KIM locks up. I try entering the program a couple more times thinking I just mistyped it somewhere, and even my dad tried entering it in himself and we get the same lock up. Watching it in step by step mode it seems to lock up at memory address 00015 (as I can remember, I'll double check in a little while) and it refuses to go any further.
Other applications I've tried typing in lock up the machine as well - the display just goes blank after hitting GO.
Any ideas? I thought about going through the ROM and checking for corruption, but if that was the case I doubt I would have gotten as far as entering the code in the first place.
My money is on the memory being at fault. I found a box of those chips laying around I could use if that was the case.