Table B-3. Select BIOS ROM
R23
Select BIOS
in
selects external BIOS
†
out
selects internal BIOS
Table B-4. Select Sectors and Configuration Option
W25
W26
†
in
out
out
in
Table B-5. Select Hardware Interrupt (IRQ)
W27
Select IRQ
in
selects IRQ2
†
out
selects IRQ5
Table
Sectors
RLL
17
RLL
26
B–3
Translate
Dynamic
yes
no
no
yes