Scucci
Well-known member
I'm try'ng to find a place that will sell a few 2148 RAM for cheap'sh, take paypal, and not have a retarded min. order?
I found a place that has them for @ 3 bucks a piece... but they want a $15 min. order... I'm only needing 2 for sure (Galaga fix, hopefully) and maybe a 3rd for any boo-boos.
If I can't find a place like that, is there anyone willing to part with a few?(yeah, posting here to save the trouble of a second post in the WTB section)
Anywho, besides that, I'm curious about the speed? What should I be looking for as far as speed with these guys go (for Galaga), or is it a non-issue?
I've got some weird boot issues (boots a little different every time I power it on). Sometimes I get a black screen now, sometimes the screen is filled with gibberish (mainly "M"s... or "W"s...) I've replaced sockets, cleaned legs (RIP Starfield generator... I hardly knew thee), replaced the 6116 rams, verifed the EPROMS, reseated everything, reflowed (reflown?) all the connector legs, verifed the ribbon cable is good, and I have no goofy resistor packets, voltage is correct, and I've hired a young priest and an old priest... still nothing, so... betting on RAM. If it's not the RAM... ... ug.
Any ideas on what it could be besides the RAM? And before you say the 74367 and the 74245 chips... please feel free to elaborate on them more. I've asked about them and gotten nothing back. I have their (and pretty much every other chip on Galaga)'s datasheets printed out right here, but without a decent flow chart or basic idea of what I should be looking for, in general (locked high, low, etc)... I might as well have a large stack of quilted 2-ply.
I'd REALLY love it if anyone knows of any Galaga flow charts for logic probes or anything like that...? I have them for Williams, but it's just a shame I haven't been able to find any for any other boards.
I found a place that has them for @ 3 bucks a piece... but they want a $15 min. order... I'm only needing 2 for sure (Galaga fix, hopefully) and maybe a 3rd for any boo-boos.
If I can't find a place like that, is there anyone willing to part with a few?(yeah, posting here to save the trouble of a second post in the WTB section)
Anywho, besides that, I'm curious about the speed? What should I be looking for as far as speed with these guys go (for Galaga), or is it a non-issue?
I've got some weird boot issues (boots a little different every time I power it on). Sometimes I get a black screen now, sometimes the screen is filled with gibberish (mainly "M"s... or "W"s...) I've replaced sockets, cleaned legs (RIP Starfield generator... I hardly knew thee), replaced the 6116 rams, verifed the EPROMS, reseated everything, reflowed (reflown?) all the connector legs, verifed the ribbon cable is good, and I have no goofy resistor packets, voltage is correct, and I've hired a young priest and an old priest... still nothing, so... betting on RAM. If it's not the RAM... ... ug.
Any ideas on what it could be besides the RAM? And before you say the 74367 and the 74245 chips... please feel free to elaborate on them more. I've asked about them and gotten nothing back. I have their (and pretty much every other chip on Galaga)'s datasheets printed out right here, but without a decent flow chart or basic idea of what I should be looking for, in general (locked high, low, etc)... I might as well have a large stack of quilted 2-ply.
I'd REALLY love it if anyone knows of any Galaga flow charts for logic probes or anything like that...? I have them for Williams, but it's just a shame I haven't been able to find any for any other boards.
