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I/O Channel Slots
The l/O channel supports:
The pinouts of the expansion bus I/O channels are shown as below
and on the next page.
Figure
26
Chapter 6: Appendix
• Refresh of system memory from channel micro-processors
• Selection of data accesses (either 8 or 16-bit)
• Interrupts
• 24-bit memory addresses (16MB)
• I/O wait-state generation
• I/O address space hex 100 to hex 3FF
• Open-bus structure (allowing multiple microprocessors to
share the system's resources, including memory)
• DMA channels
6-16: Sixty-Two Pin l/O Channels
S6-S13
J l B J l A
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