# How is normal ROM programmed [closed]

Perhaps this question may sound silly,and am sorry if there are similar questions answered already because i couldn't find one, as per guidelines. Mask ROM(MROM) are programmed while manufacturing,PROM can be programmed after manufacture and same follows to EPROM and EEPROM similarly how are ROM's are programmed. I assume ROM and MROM are two different things,latter one with program in it loaded while manufacturing. Also if i have wrong concept in my head please make it clear.

• what is a normal ROM? – jsotola Mar 29 '18 at 19:23
• as per edited question @jsotola – Samdare Mar 29 '18 at 19:28
• ROM describes single behaviour of a memory but that can be manufactured by a variety of technologies (processes). (These names often spark enthusiastic and well-meaning but pernicketty discussions with no end because it's hard to put everyone's 'I know it when I see it' definitions into a single absolute term...) – TonyM Mar 29 '18 at 19:34
• – Transistor Mar 29 '18 at 19:36
• @PeterBennett no they were not RAM cores in the rope ROM, just ransformer cores. the data was represented by the routing of the address wires through the data cores. en.wikipedia.org/wiki/Core_rope_memory – Jasen Mar 29 '18 at 22:07