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58080 58055. , , ( ). .
58055 .
:
58055 . 1.
RWCU A0 A1 , . . : / ( 0), / ( 2). .
. 1. 58055.
1, . , , , .
1 :
- (STB) , , ;
- (IBF) , , STB;
- (INTR) , ;
1 :
- (OBF) , ;
- (ACK) , ;
- (INTR) , ;
:
D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 |
1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 |
:
D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 |
1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 |
58055 . 2.
. 2. 58055.
,
a) .
b)
:
a) (64/ ) ~= 8
b) 58055 90
c) 90
|
|
|
|
000 | 00111110 | MVI A, 0A4H | . |
002 | 00100001 | LXI HL, 05AH | (90) |
005 | 00010110 | MVI D, 08H | (8) |
007 | 11010011 | OUT 05AH | |
009 | 11011011 | WAIT: IN 05AH | |
00B | 11100110 | ANI 20H | 6 |
00D | 11001010 | J2 WAIT | |
010 | 00101010 | LDAX HL | |
013 | 11010011 | OUT 05BH | 1- |
015 | 00100011 | INX HL | |
016 | 00010101 | DCB D | |
017 | 00111110 | MVZ A, 00H | |
019 | 10100010 | ANA D | , |
01A | 11000010 | JNZ WAIT | , |
01E | 01110110 | HLT |
|
|
|
|
000 | 00111110 | MVI A, 0ADH | . |
002 | 00100001 | LXI HL, 05AH | (90) |
005 | 00010110 | MVI D, 08H | (8) |
007 | 11011011 | WAIT: IN 05AH | |
009 | 11100110 | ANI 04H | 3 |
00A | 11001010 | J2 WAIT | |
00E | 11011011 | IN 05BH | |
010 | 00100010 | STAX HL | |
011 | 00100011 | INX HL | |
012 | 00010101 | DCB D | |
013 | 00111110 | MVI A, 010H | . |
015 | 11010011 | OUT 05AH | |
017 | 00111110 | MVI A, 00H | |
019 | 10100010 | ANA D | |
01A | 11000010 | JN2 WAIT | , WAIT |
01D | 01110110 | HLT |
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