Expansion cards
(most recent first)
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Expansion card#10302(Costronic RTX-02A 8255 I/O CARD) has been associated toChip#2580(Intel 8253 (Programmable Interval Timer) [uPD8253C, TMP8253P, MSM82C53]) by helencroft -
Expansion card#10302(Costronic RTX-02A 8255 I/O CARD) has been associated toChip#2582(Intel 8255A (PPI) [KS82C55A, CMQ82C55AZ, uPD8255AC, MSM82C55A, uPD71055, CXQ71055]) by helencroft