: - , .
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2. , .
MVI A, 81 | 3E | ||
OUT FB | D3 | ||
FB | |||
START: IN FA | DB | ||
FA | |||
OUT F9 | D3 | ||
F9 | |||
JMP START | C3 | ||
800 |
3. .
: (1, 2, 3) , .. .
8 (0-7) . . (0) , .. , .
17
:
: , , ().
1. 58055.
2. 58055.
3. / 58055.
4. 58055.
5. .
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- 1()
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2)
3)
4)
5)
6) , CS
58055
KP58GBB55A / , / , .
( 1, 1, 2.
1 58055 | 1. |
2. 58055 | 2. |
58055 8- (D). 24 - /, 8- , , , .
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2 8- . .
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2
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0 , . 8- 4- /. 0 16 / , , , 3.
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1 , ( ).
1 6.
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IRQ , , ASK RC , , . IRQ .
IRQ 4- , IRQ BB 2- .
1 7.
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( ) , , . IRQ , , , , . IRQ . IRQ 6- , IRQ BB 2- .
2 o6ea 8- . .
a/ 2 3.28, 2 8.
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18
:
: , , ().
1. 58059.
2. 58059.
3. / 58059.
4. 58059.
5. .
2 . IRQ4 . -E480h, 8 . - 5AC0h, 4 . IRQ5 .
1. .
2. 1, 2 3 .
3. 1, 2 3 .
4. , - 98h, 9Ah.
5. CALL < >, , .
6. .
7. 6.