Octagon 4010, User Manual

Page: 114 / 118

Appendix B – 104
MOV DX, 20AH
MOV AL, 80H ;
set auto increment for 218H/219H
OUT DX, AL
MOV DX, 218H
MOV AX, 0 ;
make bit 15=0 to disable EMS page
OUT DX, AX ;
disable first 16K page
OUT DX, AX ;
disable second 16K page
OUT DX, AX ;
disable third 16K page
OUT DX, AX ;
disable fourth 16K page
MOV DX, 387H
OUT DX, AL ;
enable user sockets
Reenable the SSD::
MOV AL,0
(Enables the SSD.)
MOV DX,387H
OUT DX,AL
INTERRUPTS
The 4010 supports two additional interrupts: IRQ10 and IRQ11.
This allows applications using expansion cards such as the Micro
PC 5540 Multifunction Card or the Micro PC 5300 Counter Timer
Card to use interrupts which have previously conflicted with the
CPU. For example, using the 5540 with the 4010 allows you to
support four COM port interrupts at one time: COM1 (IRQ4) and
COM2 (IRQ3) on the 4010 and COM3 (IRQ10) and COM4 (IRQ11)
on the 5540 card.
NOTE: The 5540 will still address COM3 as IRQ4 and COM4 as
IRQ3 on the bus.
IRQ10 and IRQ11 are jumper selectable at W4 on the 4010. IRQ10
on the 4010 is jumper selectable to IRQ3 on the bus and IRQ11 on
the 4010 is jumper selectable to IRQ4 on the bus.
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