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> Finally I have installed 32 Mb RAM based on eight 4Mx9 70ns SIMM that I designed in the meantime. https://alexandrugroza.ro/microelectronics/system-design/4m
by shoo 5y ago
> Finally I have installed 32 Mb RAM based on eight 4Mx9 70ns SIMM that I designed in the meantime.
https://alexandrugroza.ro/microelectronics/system-design/4mx9-simm/index.html https://alexandrugroza.ro/microelectronics/system-design/4mx...
- vardump 5y agoI was a bit confused for a second, but he really means 32 MB, not 32 Mb.
- jonsen 5y agoA source of confusion is that memory chips are specified in number of bits capacity, not bytes capacity. The first DRAM chips where 1-bit oriented; i.e. read and write were 1-bit at a time. Then you stacked for example 8 chips in parrallel for a byte oriented architechture, etc. 8 16Kb chips for 16KB memory.