Acer Altos 500 aa500ug.pdf - Page 56

Operation Mode, ECP DMA Channel

Get Acer Altos 500 PDF manuals and user guides View all Acer Altos 500 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 56 highlights

Operation Mode This item allows you to set the operation mode of the parallel port. Table 2-1 lists the different operation modes. Table 2-1 Parallel Port Operation Mode Settings Setting Standard Parallel Port (SPP) Standard and Bidirectional Enhanced Parallel Port (EPP) Extended Capabilities Port (ECP) Function Allows normal speed one-way operation Allows normal speed operation in a twoway mode Allows bi-directional parallel port operation at maximum speed Allows parallel port to operate in bidirectional mode and at a speed higher than the maximum data transfer rate ECP DMA Channel This item becomes active only if you select Extended Capabilities Port (ECP) as the operation mode. It allows you to assign DMA channel 1 or DMA channel 3 for the ECP parallel port function (as required in Windows 95). Altos 500 Series User's Guide

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
Altos 500 Series User’s Guide
Operation Mode
This item allows you to set the operation mode of the parallel port.
Table 2-1 lists
the different operation modes.
Table 2-1
Parallel Port Operation Mode Settings
Setting
Function
Standard Parallel Port
(SPP)
Allows normal speed one-way operation
Standard and Bi-
directional
Allows normal speed operation in a two-
way mode
Enhanced Parallel Port
(EPP)
Allows bi-directional parallel port
operation at maximum speed
Extended Capabilities
Port (ECP)
Allows parallel port to operate in bi-
directional mode and at a speed higher
than the maximum data transfer rate
ECP DMA Channel
This item becomes active only if you select
Extended Capabilities Port (ECP)
as
the operation mode.
It allows you to assign DMA channel 1 or DMA channel 3 for
the ECP parallel port function (as required in Windows 95).