Toshiba T3200 User Manual page 3

1.2 SYSTEM PCB
System PCB is composed of the following devices:
o Central processor: CPU (80286-12) (12 MHz/6 MHz»
o Numeric data processor: NPU (80287, optional)
o Memory
RAM
ROM (Main BIOS) .... .
(AGS BIOS) ..... .
Video RAM ..........•
1 Mbyte standard
3 Mbytes (option card)
--- "LIM" standard
64 Kbytes (16 bits)
32 Kbytes (8 bits)
256 Kbytes
o System suP?ort elements
Direct memory access: DMA (82C37)
Programmable interrupt controller: PIC (82C59)
Programmable interval timer: PIT (82C54)
Real time clock: RTC (MC1468l8)
o Floppy disk controller: FDC (TC8565F)
o Keyboard controller: KBC (u8042) x 2
o Display controller: PEGA2, AGS G.A.
o Gate array
Bus driver
Memory mapper
DMA driver
I/O controller
LIM
AGS (Advanced graphics subsystem)
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