HP 200 Series Hardware Support Document page 30

22
Functional Description
Address Information
Decimal Approx.
-.......--- 16M-1
16M Bytes
Memory - Mapped 1/0
9M
8M
6M
4M
256K
1K
o
Ram
TestlMonitor
External 1/0
Internal 1/0
System ROM
Boots
Exception Table
External
Address Format:
Hex
FFFFFF
900000
800000
600000
400000
003FFF
000400
000000
8M r--------------,800000
23 22 21 20 19 18 17 16 1514 13 12 1110 9 8 7 6 5 4 3 2 1
6M
4M
External
1/0
Internal
1/0
600000
400000
Select Code
0-31
Standard Select Codes
Internal
External
0 Not Used HPIB
1 CRT Alpha RS232
2 KYBD & ClK 10
3 Graphics 11 BCD
4 Flex-Disc 12 GPIO
5 13
6 DMA 14 Disc Intrlc.
7 HPIB
Figure 5-1. HP 9817 Memory Map
1/0 Register Select
20 DataComm
31-