HP Workstation x1000 hp workstation x1000 - technical reference guide - Page 50

Extended SMRAM space above 256MB

Page 50 highlights

system board memory controller hub (82845) Feature • Hub Link 8-bit interface to ICH2: - High-speed interconnect between the MCH and ICH2 (266MB/sec) • Power management: - SMRAM space remapping to A0000h BFFFFh (128KB). - Extended SMRAM space above 256MB, additional 128KB, 256KB, 512KB, 1MB TSEG from top of memory, cacheable (cacheability controlled by processor) - ACPI 1.0 compliant power management - APM 1.2 compliant power management • 593 FC-BGA MCH package Feature - • Arbitration: - Distributed arbitration model for concurrency support - Concurrent operations of system, hub interface, AGP, and memory buses supported through a dedicated arbitration and data-buffering logic • I/O device support: - I/O Controller Hub (ICH2) 50 Chapter 2

  • 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
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212

system board
memory controller hub (82845)
Chapter 2
50
Hub Link 8-bit interface to ICH2:
High-speed interconnect between the
MCH and ICH2 (266MB/sec)
Power management:
SMRAM space remapping to A0000h -
BFFFFh (128KB).
Extended SMRAM space above 256MB,
additional 128KB, 256KB, 512KB, 1MB
TSEG from top of memory, cacheable
(cacheability controlled by processor)
ACPI 1.0 compliant power management
APM 1.2 compliant power management
Arbitration:
Distributed arbitration model for
concurrency support
Concurrent operations of system, hub
interface, AGP, and memory buses
supported through a dedicated
arbitration and data-buffering logic
593 FC-BGA MCH package
I/O device support:
I/O Controller Hub (ICH2)
Feature
Feature