Memory - Revision history

Prehistoricman: /* I/O port map */ Add modchip IO port information

2025-08-12T15:43:34Z

‎I/O port map: Add modchip IO port information

Prehistoricman: Add shadow RAM to memory map

2024-02-20T23:59:31Z

Add shadow RAM to memory map

X86corez: /* I/O port map */ Add LPC PM address space.

2021-05-26T16:50:18Z

‎I/O port map: Add LPC PM address space.

X86corez: /* I/O port map */ Fixes from AMD-768 Peripheral Bus Controller datasheet.

2021-05-26T16:40:52Z

‎I/O port map: Fixes from AMD-768 Peripheral Bus Controller datasheet.

X86corez: /* I/O port map */ Better descriptions.

2021-05-25T15:52:53Z

‎I/O port map: Better descriptions.

X86corez: /* I/O port map */ Add Super I/O and Serial ports.

2021-05-25T15:16:34Z

‎I/O port map: Add Super I/O and Serial ports.

X86corez: /* I/O port map */ Fix PIC ports.

2021-05-25T15:11:34Z

‎I/O port map: Fix PIC ports.

X86corez: Add relevant links. Mark questionable I/O ports.

2021-05-25T15:06:13Z

Add relevant links. Mark questionable I/O ports.

X86corez: /* I/O port map */ Convert to the same table format as memory map.

2021-05-25T14:38:20Z

‎I/O port map: Convert to the same table format as memory map.

X86corez: /* I/O port map */ Remove overlapping ide0, minor corrections.

2021-05-24T23:54:12Z

‎I/O port map: Remove overlapping ide0, minor corrections.

@@ Line 45: / Line 45: @@
 = I/O port map =
 {{FIXME|reason=Taken from the KVMBOX memorymap.txt, not confirmed}}
 {| class="wikitable" style="text-align: center;"

@@ Line 12: / Line 12: @@
 |0x00000000 - 0x03FFFFFF
 |0x00000000 - 0x07FFFFFF
 |-
 |[[GPU|GPU (NV2A) Registers]]

@@ Line 101: / Line 101: @@
 |-
 |colspan="2"|0x1400 - 0x14FF
 |-
 |rowspan="2"|[[SMBus|SMBus (I2C)]]

@@ Line 48: / Line 48: @@
 |-
 |DMA Channels 0-3
-|colspan="2"|0x0000 - 0x001F
+|colspan="2"|0x0000 - 0x000F
 |-
 |Master PIC
@@ Line 59: / Line 59: @@
 |[[Porting an Operating System to the Xbox HOWTO #Timer Frequency|PIT]]
 |colspan="2"|0x0040 - 0x0043
 |-
 |[[17 Mistakes Microsoft Made in the Xbox Security System #The Xbox Hardware|A20 Gate]] / [[MCPX #Pin L21: PC Speaker|Speaker]]
@@ Line 67: / Line 64: @@
 |-
 |CMOS / RTC
-|colspan="2"|0x0070 - 0x007F
+|colspan="2"|0x0070 - 0x0073
 |-
 |DMA Page Address
@@ Line 78: / Line 75: @@
 |colspan="2"|0x00C0 - 0x00DF
 |-
-|FPU {{FIXME|reason=What is this?}}
+|FPU Error Control
-|colspan="2"|0x00F0 - 0x00FF
+|colspan="2"|0x00F0 - 0x00F1
 |-
 |IDE

@@ Line 53: / Line 53: @@
 |colspan="2"|0x0020 - 0x0021
 |-
-|[[Super I/O]]
+|[[Super I/O|Super I/O Configuration]]
 |N/A
 |0x002E - 0x002F
@@ Line 90: / Line 90: @@
 |colspan="2"|0x03F6 - 0x03F6
 |-
-|Serial (COM1)
+|[[Super I/O|Super I/O Serial]]
 |N/A
 |0x03F8 - 0x03FF
 |-
-|[[PCI|PCI Configuration Space]]
+|[[PCI|PCI Configuration]]
 |colspan="2"|0x0CF8 - 0x0CFF
 |-

@@ Line 51: / Line 51: @@
 |-
 |Master PIC
-|colspan="2"|0x0020 - 0x003F
+|colspan="2"|0x0020 - 0x0021
 |-
 |[[Porting an Operating System to the Xbox HOWTO #Timer Frequency|PIT]]
@@ Line 69: / Line 69: @@
 |-
 |Slave PIC
-|colspan="2"|0x00A0 - 0x00BF
+|colspan="2"|0x00A0 - 0x00A1
 |-
 |DMA Channels 4-7

@@ Line 19: / Line 19: @@
 |colspan="2"|0xFE800000 - 0xFE87FFFF
 |-
-|ACI (AC97) Registers
+|[[ACI|ACI (AC97) Registers]]
 |colspan="2"|0xFEC00000 - 0xFEC00FFF
 |-
@@ Line 53: / Line 53: @@
 |colspan="2"|0x0020 - 0x003F
 |-
-|Timer 0
+|[[Porting an Operating System to the Xbox HOWTO #Timer Frequency|PIT]]
 |colspan="2"|0x0040 - 0x0043
 |-
-|Timer 1
+|Timer 1 {{FIXME|reason=What is this?}}
 |colspan="2"|0x0050 - 0x0053
 |-
-|A20 Gate / Speaker
+|[[17 Mistakes Microsoft Made in the Xbox Security System #The Xbox Hardware|A20 Gate]] / [[MCPX #Pin L21: PC Speaker|Speaker]]
 |colspan="2"|0x0060 - 0x006F
 |-
@@ Line 74: / Line 74: @@
 |colspan="2"|0x00C0 - 0x00DF
 |-
-|FPU
+|FPU {{FIXME|reason=What is this?}}
 |colspan="2"|0x00F0 - 0x00FF
 |-
@@ Line 80: / Line 80: @@
 |colspan="2"|0x01F0 - 0x01F7
 |-
-|vesafb
+|vesafb {{FIXME|reason=Does XGPU expose I/O ports?}}
 |colspan="2"|0x03C0 - 0x03DF
 |-
-|IDE
+|IDE {{FIXME|reason=Really? This is rather one of FDC ports}}
 |colspan="2"|0x03F6 - 0x03F6
 |-
-|PCI Configuration Space
+|[[PCI|PCI Configuration Space]]
 |colspan="2"|0x0CF8 - 0x0CFF
 |-
-|SMBus (I2C)
+|[[SMBus|SMBus (I2C)]]
 |colspan="2"|0x1000 - 0x100F
 |-
@@ Line 97: / Line 97: @@
 |colspan="2"|0x1400 - 0x14FF
 |-
-|rowspan="2"|SMBus (I2C)
+|rowspan="2"|[[SMBus|SMBus (I2C)]]
 |colspan="2"|0xC000 - 0xC00F
 |-
 |colspan="2"|0xC200 - 0xC21F
 |-
-|rowspan="2"|ACI (AC97)
+|rowspan="2"|[[ACI|ACI (AC97)]]
 |colspan="2"|0xD000 - 0xD0FF
 |-

@@ Line 42: / Line 42: @@
 {{FIXME|reason=Taken from the KVMBOX memorymap.txt, not confirmed}}
-{| class="wikitable"
+{| class="wikitable" style="text-align: center;"
-! Ports || Purpose
+! Device
 |-
-| 0000-001f || dma1
+|DMA Channels 0-3
 |-
-| 0020-003f || pic1
+|Master PIC
 |-
-| 0040-0043 || timer0
+|Timer 0
 |-
-| 0050-0053 || timer1
+|Timer 1
 |-
-| 0060-006f || keyboard
+|A20 Gate / Speaker
 |-
-| 0070-007f || rtc
+|CMOS / RTC
 |-
-| 0080-008f || dma page reg
+|DMA Page Address
 |-
-| 00a0-00bf || pic2
+|Slave PIC
 |-
-| 00c0-00df || dma2
+|DMA Channels 4-7
 |-
-| 00f0-00ff || fpu
+|FPU
 |-
-| 01f0-01f7 || ide0
+|IDE
 |-
-| 03c0-03df || vesafb
+|vesafb
 |-
-| 03f6-03f6 || ide0
+|IDE
 |-
-| 0cf8-0cff || PCI conf1
+|PCI Configuration Space
 |-
-| 1000-100f || nVidia Corporation nForce PCI System Management
+|SMBus (I2C)
 |-
-| 1080-10ff || nVidia Corporation nForce MC'97 Modem (Intel 537)
+|rowspan="2"|Modem (MC97)
 |-
-| 1400-14ff || nVidia Corporation nForce MC'97 Modem (Intel 537)
+|colspan="2"|0x1400 - 0x14FF
 |-
-| c000-c00f || nVidia Corporation nForce PCI System Management (amd756-smbus)
+|rowspan="2"|SMBus (I2C)
 |-
-| c200-c21f || nVidia Corporation nForce PCI System Management
+|colspan="2"|0xC200 - 0xC21F
 |-
-| d000-d0ff || nVidia Corporation nForce AC'97 Audio
+|rowspan="2"|ACI (AC97)
 |-
-| d200-d27f || nVidia Corporation nForce AC'97 Audio
+|colspan="2"|0xD200 - 0xD27F
 |-
-| e000-e007 || nVidia Corporation nForce Ethernet Controller
+|NIC (NVNet)
 |-
-| ff60-ff6f || nVidia Corporation nForce IDE
+|IDE
 |}