Appe
ndix
Appendix
User's Manual
BAB
740
7—5
Table 32: Interrupt
Priority
ISA IRQ
PCI IRQ
Source
1
INT 0
Timer 0 (Ticker)
2
INT 1
Keyboard
3
INT 8
4
INT 9
ESCC
5
INT10
INT A
PMC #1
6
INT 11
INT B
SCSI or PMC #2
7
INT 12
8
INT 13
9
INT 14
INT C
Ethernet
10
INT 15
INT D
VME
11
INT 3
Serial #2
12
INT 4
Serial #1
13
INT 5
RTC
14
INT 6
Floppy
15
INT 7
Parallel Port
7.1.4 SRAM/RTC
A indirect addressing scheme is used to access the M48T59Y
SRAM/RTC. To access the SRAM/RTC the desired address first
must be written to I/O address $70 and $71. Then the data can be
accessed via I/O address $76. The interrupt output of the M48T59Y
is connected with the INT5 input of the interrupt controller. It may
be used to generate periodic interrupts or watchdog interrupts.
Table 33: SRAM/RTC Address Assignment
I/O Address
Description
$070
SRAM/RTC LSB Address
$071
SRAM/RTC MSB Address
$076 SRAM/RTC
Data
Summary of Contents for BAB 740
Page 1: ...BAB 740 Basic Automation Board with PowerPC 740 manual Revision 2C...
Page 11: ...User s Manual Table of Contents BAB 740 V 7 1 9 PCI IDSEL 7 9 7 2 Factory settable Jumpers 7 9...
Page 16: ...Table of Contents User s Manual BAB 740 X...
Page 22: ...Specification Specification User s Manual BAB 740 1 6...
Page 42: ...Connector Assignments User s Manual BAB 740 3 16 Connector Assignments...
Page 50: ...Board Parameters Board Parameters User s Manual BAB 740 4 8...
Page 60: ...Booting Booting User s Manual BAB 740 6 4...
Page 74: ...NOTES...