EPROMS also hold code but can be erased and reprogrammed. Mask ROMS have embedded code that can't be changed. Sometimes they were used to house the bootstrap code and/or the BASIC interpreter in old microcomputers although this function was often more commonly provided by mask ROMS. The ICs hold code, often an auxiliary program such as an application, utility or game which can be loaded immediately on startup. Rather it provides enough practical tips and information for readers to attempt an EPROM replacement of failed compatible parts.ĮPROM stands for Erasable-Programmable ROM. Furthermore, the article doesn't cover all of the theory and physics. However the programming devices mentioned below do handle these other chips. mostly because I don't know much about them. The text below covers only EPROMs rather than the later programmable ICs such as EEPROM, MPU, GAL/PLD etc. This article is for those that are unfamiliar with EPROMS and want to get their machines up and running again. EPROMS: The minimum you need to know to burn your ownįrom time to time those of us with the passion to preserve ancient computers from the 19s will come across the need to replace a failed masked ROM or EPROM.
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