| Компонент | Описание | Производитель | |
| P4C422-20SC | HIGH SPEED 256 x 4 STATIC CMOS RAM |
Pyramid Semiconductor Corporation |
|
| P4C422-20SM | HIGH SPEED 256 x 4 STATIC CMOS RAM |
Pyramid Semiconductor Corporation |
|
| P4C422-20SMB | HIGH SPEED 256 x 4 STATIC CMOS RAM |
Pyramid Semiconductor Corporation |