27C512-15 Integrated Circuit - DIP28M - Texas Instruments

27C512-12 Integrated Circuit - DIP28M - Texas Instruments

27C256-10 Integrated Circuit - DIP28M - Texas Instruments

27C020-10 Integrated Circuit - DIP32M - Generic Make

27C256-25DI Integrated Circuit - DIP28M - Generic Make

27C512-20FA Integrated Circuit - DIP28 - Signetics

27C64-15 Integrated Circuit - DIP28M - Generic Make

TMS27C128JL Integrated Circuit - DIP28 - Texas Instruments