Toshiba Satellite 110 Series Maintenance Manual page 6

One Super Integration (SI)
Contains the following components:
• Two DMACs ............ 82C37 equivalent
• Two PICs .................. 82C59 equivalent
• Two SIOs .................. 16550 equivalent (One SIO is not used)
• Two UART ............... 16550 equivalent
• One PIT..................... 82C54 equivalent
• One FDC ................... TC8565 equivalent
• One VFO................... TC8568 equivalent
• One I/O port decode
• One SIO port control
• One printer port control supported ECP
• One FDD control
• One speaker control
• One power communication control
System Controller Gate Array (SCPCNT-GA)
This gate array's functions:
• CPU control
- SMI control
- CPU clock control
• Memory control
- 64-bit bus memory control
- 32-bit bus memory control
• Bus control
- 64-bit data bus <==>32-bit data bus
- 32-bit local bus control
• Address latch control
• I/O register control
• Processing speed control
ISA Bus Controller Gate Array (SISCNT-GA)
This gate array's functions:
• Bus control
- 32-bit data bus <==> 16-bit data bus
- ISA bus interface control
- ISA bus access control
- DMAC control
- DMA address generation
- I/O control
- Suspend/resume sequence
• Memory control
- ISA bus interface control
- Refresh address generation
• I/O register control
• Suspend/resume sequence
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110 Series