Reference Manual

PMAC Mini PCI Hardware Reference Manual
Suggested I/O M-Variable Definitions
16
SUGGESTED I/O M-VARIABLE DEFINITIONS
General Purpose Inputs and Outputs
M1->Y:$FFC4,0,1 ; Machine Output 1
M2->Y:$FFC4,1,1 ; Machine Output 2
M3->Y:$FFC4,2,1 ; Machine Output 3
M4->Y:$FFC4,3,1 ; Machine Output 4
M5->Y:$FFC4,4,1 ; Machine Output 5
M6->Y:$FFC4,5,1 ; Machine Output 6
M7->Y:$FFC4,6,1 ; Machine Output 7
M8->Y:$FFC4,7,1 ; Machine Output 8
M9->Y:$FFC4,0,8,U ; Machine Outputs 1-8 treated as byte
M11->Y:$FFC3,0,1 ; Machine Input 1
M12->Y:$FFC3,1,1 ; Machine Input 2
M13->Y:$FFC3,2,1 ; Machine Input 3
M14->Y:$FFC3,3,1 ; Machine Input 4
M15->Y:$FFC3,4,1 ; Machine Input 5
M16->Y:$FFC3,5,1 ; Machine Input 6
M17->Y:$FFC3,6,1 ; Machine Input 7
M18->Y:$FFC3,7,1 ; Machine Input 8
M19->Y:$FFC3,0,8,U ; Machine Inputs 1-8 treated as byte
Thumbwheel Port Bits (Can be Used as General Purpose I/O)
(These definitions are valid for PMAC Mini PCI only)
M40->Y:$FFC2,0,1 ; SEL0 Output
M41->Y:$FFC2,1,1 ; SEL1 Output
M42->Y:$FFC2,2,1 ; SEL2 Output
M43->Y:$FFC2,3,1 ; SEL3 Output
M44->Y:$FFC2,4,1 ; SEL4 Output
M45->Y:$FFC2,5,1 ; SEL5 Output
M46->Y:$FFC2,6,1 ; SEL6 Output
M47->Y:$FFC2,7,1 ; SEL7 Output
M48->Y:$FFC2,0,8,U ; SEL0-7 Outputs treated as a byte
M50->Y:$FFC1,0,1 ; DAT0 Input
M51->Y:$FFC1,1,1 ; DAT1 Input
M52->Y:$FFC1,2,1 ; DAT2 Input
M53->Y:$FFC1,3,1 ; DAT3 Input
M54->Y:$FFC1,4,1 ; DAT4 Input
M55->Y:$FFC1,5,1 ; DAT5 Input
M56->Y:$FFC1,6,1 ; DAT6 Input
M57->Y:$FFC1,7,1 ; DAT7 Input
M58->Y:$FFC1,0,8,U ; DAT0-7 Inputs treated as a byte