IBM 560z Manuale Supplementare
Specifications
Figure 1-4 to Figure 1-7 on page 1-9 list the specifications for the
computer.
computer.
Performance Specifications
Figure
1-4. Performance Specifications for the ThinkPad 560Z
Device
Cycle
Time (ns)
Time (ns)
Microprocessor (66 MHz–15 ns clock)
Access to RAM:
Access to RAM:
ñ
Memory read
Page hit, burst
Page miss, burst
Page miss, burst
135 ns
255 ns
255 ns
Memory write
Page miss, burst
45 ns
Access to ROM:
1000
Refresh rate (typically performed every 15.6
µ
s)
750 (minimum)
DMA controller (4 MHz–250
µ
s clock):
1250
Bus cycles (AT):
8 bit
16 bit
1000
625
ñ
The cycle times shown for access to system-board RAM are based on 60-ns
EDO memory.
EDO memory.
ThinkPad 560Z System Overview
1-7