modem7
10k Member
There are some EPROM burning basics at http://www.arlabs.com/help.htm
If you buy the EPROMS new or new-old-stock (NOS), they'll be in an erased state.
For the 5170, you will definitely need 27256 or 27C256 EPROMs. For the type 1 motherboard (at factory set 6MHz), IBM specify the use of EPROMs with an access time of 150nS (or faster).
Probably best to get 100nS rated ones, in case you get an 8 MHz 5170 or similarly rated machine.
Most 27256 or 27C256 EPROMs rated at 100nS access time will have a "-10" at the end of the part number (e.g. M27C256B-10)
By the way. I bought one of the EPROM erasers at eBay item 130269202777, mainly because of the low cost. Don't expect the timer to work perfectly. Because the unit contains a tube with filament (like a light bulb), there is a reasonably high risk of damage to the tube during transit. Mine survived the Hong Kong to Australia trip.
If you buy the EPROMS new or new-old-stock (NOS), they'll be in an erased state.
For the 5170, you will definitely need 27256 or 27C256 EPROMs. For the type 1 motherboard (at factory set 6MHz), IBM specify the use of EPROMs with an access time of 150nS (or faster).
Probably best to get 100nS rated ones, in case you get an 8 MHz 5170 or similarly rated machine.
Most 27256 or 27C256 EPROMs rated at 100nS access time will have a "-10" at the end of the part number (e.g. M27C256B-10)
By the way. I bought one of the EPROM erasers at eBay item 130269202777, mainly because of the low cost. Don't expect the timer to work perfectly. Because the unit contains a tube with filament (like a light bulb), there is a reasonably high risk of damage to the tube during transit. Mine survived the Hong Kong to Australia trip.