Apple Macintosh PowerBook 190cs/66 Specifications Page 42
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CHAPTER 3
I/O Features
26
SCSI Port
SCSI Port 3
The SCSI port on the Macintosh PowerBook 190 computer supports the SCSI interface as
defined by the American National Standards Institute (ANSI) X3T9.2 committee.
The external HDI-30 connector is identical to those used in other Macintosh PowerBook
models. The SCSI portion of the Combo IC connects directly to the external SCSI
connector and can sink up to 48 mA through each of the pins connected to the SCSI bus.
The data and control signals on the SCSI bus are active low signals that are driven by
open drain outputs.
Table 3-5 shows the signal assignments for the external SCSI connector. Note that pin 1
of the external SCSI connector is the /SCSI.DISK.MODE signal.
Table 3-4
Serial port signals
Pin
number Signal name Signal description
1 HSKo Handshake output
2 HSKi Handshake input
3 TxD– Transmit data –
4 SG Signal ground
5 RxD– Receive data –
6 TxD+ Transmit data +
7 GPi General-purpose input
8 RxD+ Receive data +
Table 3-5
Signals on the SCSI connector
Pin
number Signal name Signal name
1 /SCSI.DISK.MODE SCSI disk operating mode
2 /DB0 Bit 0 of SCSI data bus
3 GND Ground
4 /DB1 Bit 1 of SCSI data bus
5 TERMPWR Termination power (not used; reserved)
6 /DB2 Bit 2 of SCSI data bus
7 /DB3 Bit 3 of SCSI data bus
continued
- Macintosh PowerBook 190 1
- Computer 1
- Thi d t t d ith F M k 4 0 4 2
- Contents 3
- I/O Features 4
- Expansion Modules 4
- Software Features 5
- Large Volume Support 6
- Chapter 8 7
- Figures and Tables 9
- Software for ATA Devices 10
- About This Developer Note 11
- Apple Publications 0 12
- Other Publications 0 13
- Typographical Conventions 0 14
- Standard Abbreviations 0 14
- PREFACE 15
- Introduction 1 17
- Features 1 18
- Appearance 1 19
- CHAPTER 1 20
- Configurations 1 21
- Peripheral Devices 1 22
- Compatibility Issues 1 22
- Introduction 23
- Compatibility Issues 23
- Architecture 2 25
- CHAPTER 2 26
- Processor/Memory Subsystem 2 27
- Input/Output Subsystem 2 28
- Architecture 29
- Input/Output Subsystem 29
- Display Controller IC 2 30
- Baboon Custom IC 2 30
- Video Card 2 31
- I/O Features 3 33
- Internal Hard Disk Drive 3 34
- CHAPTER 3 35
- Hard Disk Connectors 3 36
- Pin Assignments 3 37
- IDE Signal Descriptions 3 38
- Trackpad 3 39
- Keyboard 3 39
- Flat Panel Displays 3 40
- Serial Port 3 41
- SCSI Port 3 42
- ADB Port 3 44
- Infrared Module 3 45
- Sound System 3 45
- Sound Inputs 3 46
- Sound Outputs 3 46
- Expansion Modules 4 47
- Expansion Bay 4 48
- Expansion Bay Connector 4 49
- CHAPTER 4 50
- Signal Definitions 4 51
- Unused IDE Signals 4 53
- Power on the Expansion Bay 4 53
- Sequence of Control Signals 4 54
- Guidelines for Developers 4 54
- RAM Expansion 4 55
- Signal Descriptions 4 58
- Address Multiplexing 4 59
- Banks of DRAM 4 60
- DRAM Device Requirements 4 60
- RAM Expansion 45 61
- RAM Card Dimensions 4 62
- RAM Card Connector 4 63
- Video Card 4 64
- Video Mirroring 4 65
- External Video Connector 4 66
- Monitor Sense Codes 4 67
- Video Card Design Guide 4 68
- Video Card 70
- Signal name Description 70
- Video Card 55 71
- 56 Video Card 72
- PCMCIA Slot 4 73
- Summary Specifications 4 74
- Power 4 75
- Controller Interrupts 4 75
- Software Features 5 77
- ROM Software 5 78
- ROM Software 79
- System Software 5 81
- 64-Bit Volume Addresses 5 82
- System-Level Software 5 82
- Drive Setup 5 83
- System Software 84
- Large Volume Support 6 85
- API Changes 6 86
- Allocation Block Size 6 86
- The API Modifications 6 87
- The API Modifications 88
- New Extended Function 6 91
- The API Modifications 77 93
- Trap macro Selector 93
- Software for ATA Devices 7 95
- ATA Disk Driver 7 97
- Drives on PC Cards 7 98
- ATA Disk Driver Reference 7 99
- Standard Device Routines 7 100
- The Status Routine 7 101
- Control Functions 7 102
- ATA Disk Driver Reference 87 103
- Parameter block 103
- ATA Disk Driver Reference 104
- ATA Disk Driver Reference 89 105
- ATA Disk Driver Reference 91 107
- Status Functions 7 109
- ATA Disk Driver Reference 95 111
- ATA Disk Driver Reference 97 113
- ATA Manager Reference 7 114
- The ATA Parameter Block 7 115
- ATA Manager Reference 116
- Field descriptions 116
- CHAPTER 7 117
- Name Bit Definition 118
- Functions 7 120
- ATA_Abort 7 121
- ATA_BusInquiry 7 122
- ATA Manager Reference 107 123
- ATA_DrvrDeregister 7 124
- ATA_DrvrRegister 7 125
- ATA Manager Reference 111 127
- ATA_EjectDrive 7 128
- ATA_ExecIO 7 129
- ATA Manager Reference 115 131
- ATA_FindRefNum 7 132
- ATA_GetDevConfig 7 133
- ATA Manager Reference 119 135
- Bits Field validity indicated 135
- ATA_GetDevLocationIcon 7 136
- ATA_Identify 7 137
- ATA_MgrInquiry 7 138
- ATA_ModifyDrvrEventMask 7 139
- ATA_NOP 7 140
- ATA_QRelease 7 141
- ATA_RegAccess 7 141
- ATA Manager Reference 127 143
- RESULT CODES 144
- ATA_ResetBus 7 145
- ATA_SetDevConfig 7 146
- ATA Manager Reference 131 147
- Device Driver Loading 7 149
- Device Driver Purging 7 152
- Purge permissions 153
- Setting the I/O Speed 7 154
- Error Code Summary 7 155
- PC Card Services 8 159
- Client Information 8 160
- CSGetNextClient 8 161
- CSGetClientInfo 8 162
- CHAPTER 8 163
- Configuration 8 164
- CSGetConfigurationInfo 8 165
- DESCRIPTION 166
- CSRequestConfiguration 8 167
- CSModifyConfiguration 8 168
- CSReleaseConfiguration 8 169
- Masks 8 171
- CSSetClientEventMask 8 173
- CSRequestSocketMask 8 174
- CSReleaseSocketMask 8 174
- Tuples 8 175
- CSGetNextTuple 8 176
- CSGetTupleData 8 178
- Card and Socket Status 8 179
- Access Window Management 8 180
- CSModifyWindow 8 182
- CSReleaseWindow 8 183
- Client Registration 8 184
- CSRegisterClient 8 185
- Miscellaneous Functions 8 186
- CSResetCard 8 187
- CSValidateCIS 8 187
- CSVendorSpecific 8 188
- EjectCard Parameter Block 8 189
- GetCardInfo Parameter Block 8 190
- PC Card Manager Constants 8 193
- 178 PC Card Manager Constants 194
- 180 PC Card Manager Constants 196
- Glossary 197
- GLOSSARY 198
- Numerals 199
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