User`s manual

NEC EEPROM
Part # Volts Type Menu Size, notes
µPD28C64 TTL C 9 8K
NEC MPU
Part # Volts Type Menu Size, notes
8741 25.0 N MR 1K Note 2
8742H 21.0 N MU 2K Note 2
8748 25.0 N MR 1K Note 2
8748H 21.0 N MT 1K Note 2
8749H 21.0 N MU 2K Note 2
OKI

Eproms
Part # Volts Type Menu Size notes
MSM2764 21.0 N ME 8K
MSM2764A 12.5 N M1 8K
MSM2764AZB 12.5 N M1 8K
MSM27128 21.0 N MF 16K
MSM27128A/AS12.5 N M2,TI 16K
MSM27128AZB12.5 N M2 16K
MSM27C128AS12.5 C M2 16K
MSM27256/AS 12.5 N MZ 32K
MSM27256ZB 12.5 N MZ 32K
MSM27C256 12.5 C MZ 32K
MSM27C256ZB12.5 C MZ 32K
MSM27C256H 12.5 C MZ,TI 32K
MSM27C256HZB 12.5 C MZ,TI 32K
MSM27512/AS 12.5 N M7 64K
MSM27512ZB 12.5 N M7 64K
MSM271000/AS12.5 N M= 128K Note 6
MSM271000ZB 12.5 N M= 128K Note 6
MSM271024/AS12.5 N M= 64Kx16 Note 1
MSM27C1024/AS12.5 C M= 64Kx16 Note 1
Appendix B Model 9000
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