advans13
Requested Self-Ban
joust garbage, and/or corrupt? text. background - i was testing a robotron rom board in the joust, to verify it was the robotron rom board in that unit that was effing it up....now that it was i replaced it with another.
i go to reinstall my joust rom board, and i put connector 2j4 (goes to the sound interface board) down by one pin, effectively putting pin 1 on pin2 and leaving the last pin off the header. i didn't notice the problem until i turned the machine on and was greeted to corrupt text - including i believe all systems operational in garbage font
. i proceeded to the game mode fine, as well as playing the game fine to see where else the problem was.
again, all sprite graphics were good....except the text characters (score, words, etc) in all aspects of the game. the only graphic sprite based glitch was when you die, and come back the energy field do-dad that surrounds you is unrecognizable. sounds are all good as well. machine was reading "0" on the led display via the rom board. as far as the game was concerned it was fine.
i first thought i hosed a rom, so i swapped one by one with a pre-burned ste and powered up the game with no change from each swap. i also swapped the special chips, decoder proms and cpu for fun with no changes.
i then suspected the rom board cable, and noticed that pin 40 on the cpu side (header) was bent and not inserted in the female side of the cable. went to correct the pin and it snapped off. i think pin 40 is the ground? game still plays with no issues.
things i havent done and will be doing tonight; swapping in a working robotron rom board to test if its the cpu or rom board issue, and vice versa with the cpu board. additionally, was the problem really caused by the 2j4 mishap?
any ideas in the meantime?
i go to reinstall my joust rom board, and i put connector 2j4 (goes to the sound interface board) down by one pin, effectively putting pin 1 on pin2 and leaving the last pin off the header. i didn't notice the problem until i turned the machine on and was greeted to corrupt text - including i believe all systems operational in garbage font
again, all sprite graphics were good....except the text characters (score, words, etc) in all aspects of the game. the only graphic sprite based glitch was when you die, and come back the energy field do-dad that surrounds you is unrecognizable. sounds are all good as well. machine was reading "0" on the led display via the rom board. as far as the game was concerned it was fine.
i first thought i hosed a rom, so i swapped one by one with a pre-burned ste and powered up the game with no change from each swap. i also swapped the special chips, decoder proms and cpu for fun with no changes.
i then suspected the rom board cable, and noticed that pin 40 on the cpu side (header) was bent and not inserted in the female side of the cable. went to correct the pin and it snapped off. i think pin 40 is the ground? game still plays with no issues.
things i havent done and will be doing tonight; swapping in a working robotron rom board to test if its the cpu or rom board issue, and vice versa with the cpu board. additionally, was the problem really caused by the 2j4 mishap?
any ideas in the meantime?

