TimePiloteer Well-known member Donor 2016 VAPS Joined Oct 12, 2016 Messages 1,596 Reaction score 476 Location Woodinville, Washington Oct 5, 2024 #1 I have a bad mask rom on a POW board set, on the rom expansion daughterboard. It is a 28 pin mask rom, sitting in a 32 pin socket, aligned to the bottom. Does anyone know what I can replace it with?
I have a bad mask rom on a POW board set, on the rom expansion daughterboard. It is a 28 pin mask rom, sitting in a 32 pin socket, aligned to the bottom. Does anyone know what I can replace it with?
OP OP TimePiloteer Well-known member Donor 2016 VAPS Joined Oct 12, 2016 Messages 1,596 Reaction score 476 Location Woodinville, Washington Oct 5, 2024 #2 The silkscreen says 27301. Does that mean I can use a 27C301 32 pin in the socket (or equivalent like AM27C100)?
The silkscreen says 27301. Does that mean I can use a 27C301 32 pin in the socket (or equivalent like AM27C100)?
parism Well-known member Donor 10 years: 2014-2015, 2017-2021, 2023-2025 VAPS Joined May 31, 2007 Messages 6,493 Reaction score 4,515 Location Villanova, Pennsylvania Oct 5, 2024 #3 TimePiloteer said: The silkscreen says 27301. Does that mean I can use a 27C301 32 pin in the socket (or equivalent like AM27C100)? Click to expand... That would be my best guess too.
TimePiloteer said: The silkscreen says 27301. Does that mean I can use a 27C301 32 pin in the socket (or equivalent like AM27C100)? Click to expand... That would be my best guess too.
OP OP TimePiloteer Well-known member Donor 2016 VAPS Joined Oct 12, 2016 Messages 1,596 Reaction score 476 Location Woodinville, Washington Oct 15, 2024 #4 Yes, this worked. I used an AM27C100, and chose 27C301 as the device type in GQ-4X programmer. Worked great!
Yes, this worked. I used an AM27C100, and chose 27C301 as the device type in GQ-4X programmer. Worked great!