HP 9000 Series 300

Product Information
1
Information in this manual refers to the HP 9000 HP 98561A and HP 98561B computers. Where
applicable, the information also applies to the HP 98568A eight-slot backplane expander.
Processors
HP98561A
Type:
Clock frequency:
Internal architecture:
Address range:
RAM data bus:
Instruction types:
Major
data types:
Addressing modes:
Interrupt levels:
HP98561B
Type:
Clock frequency:
Internal architecture:
Address range:
RAM data bus:
Cache data bus:
Instruction types:
Major
data types:
Addressing modes:
Interrupt levels:
Floating-point Co-proc.
Motorola 68010
10 MHz
32-bit
data and address registers
16M bytes (7.5M bytes user RAM)
16-bit asynchronous
57
5
14
6 maskable and 1 non-maskable
Motorola 68020
16.6 MHz
32-bit
data and address registers
4G bytes (7.5M bytes user RAM)
16-bit asynchronous
32-bit
100
7
18
6 maskable and 1 non-maskable
12.5 MHz Motorola 68881
Product Information 1