82374EB Просмотр технического описания (PDF) - Intel

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82374EB

EISA SYSTEM COMPONENT (ESC)

Intel 

CONTENTS

PAGE

3 2 13 DMALPR DMA LOW PAGE REFRESH REGISTER

65

3 2 14 DMAMHPG DMA MEMORY HIGH PAGE REGISTER DMA MEMORY BASE

HIGH PAGE REGISTER

65

3 2 15 DMAHPGR DMA HIGH PAGE REGISTER REFRESH

66

3 2 16 STOP REGISTERS

66

3 2 17 CHAIN CHAINING MODE REGISTER

67

3 2 18 CHAINSTA CHAINING MODE STATUS REGISTER

68

3 2 19 CHINTST CHANNEL INTERRUPT STATUS REGISTER

68

3 2 20 CHAINBEC CHAIN BUFFER EXPIRATION CONTROL REGISTER

68

3 2 21 SCATGA SCATTER-GATHER COMMAND REGISTER

69

3 2 22 SCAGAST SCATTER-GATHER STATUS REGISTER

71

3 2 23 SCAGAD SCATTER-GATHER DESCRIPTOR TABLE POINTER REGISTER 72

3 2 24 CBPFF CLEAR BYTE POINTER FLIP FLOP REGISTER

73

3 2 25 DMC DMA MASTER CLEAR REGISTER

73

3 2 26 DCM DMA CLEAR MASK REGISTER

74

3 3 Timer Unit Registers

74

3 3 1 TCW TIMER CONTROL WORD REGISTER

74

3 3 2 TIMER READ BACK COMMAND REGISTER

76

3 3 3 COUNTER LATCH COMMAND REGISTER

77

3 3 4 TMSTAT TIMER STATUS BYTE FORMAT REGISTER

78

3 3 5 CAPS COUNTER ACCESS PORTS

79

3 4 Interrupt Controller Registers

79

3 4 1 ICW1 INITIALIZATION COMMAND WORD 1

79

3 4 2 ICW2 INITIALIZATION COMMAND WORD 2

81

3 4 3 ICW3 INITIALIZATION COMMAND WORD 3 (MASTER)

82

3 4 4 ICW3 INITIALIZATION COMMAND WORD 3 (SLAVE)

82

3 4 5 ICW4 INITIALIZATION COMMAND WORD 4

83

3 4 6 OCW1 OPERATION CONTROL WORD 1

84

3 4 7 OCW2 OPERATION CONTROL WORD 2

84

3 4 8 OCW3 OPERATION CONTROL WORD 3

85

3 4 9 ELCR EDGE LEVEL CONTROL REGISTER

87

3 4 10 NMISC NMI STATUS AND CONTROL REGISTER

87

3 4 11 NMIERTC NMI CONTROL AND REAL-TIME CLOCK ADDRESS

88

3 4 12 NMIESC NMI EXTENDED STATUS AND CONTROL REGISTER

89

3 4 13 SOFTNMI SOFTWARE NMI GENERATION REGISTER

90

3 5 EISA Configuration Floppy Support and Port 92h

90

3 5 1 CONFRAMP CONFIGURATION RAM PAGE REGISTER

90

3 5 2 DIGOUT DIGITAL OUTPUT REGISTER

90

6

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