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Page 5-22
5.4.9 Keycap number
FIGURE 5-20 Keycap Number
MODEL:T1200H/HB
Page 5-23
5.5 DISPLAY CODE
TABLE 5-9 Display Code
MODEL:T1200H/HB
Page A-1
A.1 GENERAL
The Bus Controller Gate Array is a 2,000 gate flat package type
chip with 100 lead pins. It contains the following functions.
Signal name and meaning of each pin used in this chip are
explained in this section together with its detailed definitions.
1) Clock generator
2) Command decoder
3) Bus controller
4) 8-16 bit controller
5) Wait controller
6) DMA bus controller
7) DMA page register
8) RAM/ROM select controller
9) NMI controller
10) Keyboard controller
11) Circuitry compatible with the 8255
FIGURE A-1 Bus Controller
MODEL:T1200H/HB
Page A-2
A.2 BLOCK DIAGRAM
G.A.
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