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Version 1:
Offset Type Description
0 uint16_t Length of the PInS data, in bytes. This must be 64.
2 uint16_t Product ID. Possible values are:
0: MGA-S1P20 (2MB base with 175MHz RAMDAC)
1: MGA-S1P21 (2MB base with 220MHz RAMDAC)
2: Reserved
3: Reserved
4: MGA-S1P40 (4MB base with 175MHz RAMDAC)
5: MGA-S1P41 (4MB base with 220MHz RAMDAC)
4 char[8] Serial number of the board. NUL terminated string.
12 uint16_t Manufacturing date of the board (at product test).
Format (stored little-endian) yyyyyyymmmmddddd.
14 uint16_t Identification of manufacturing site.
16 uint16_t Number and revision level of the PCB. Format (stored
little-endian): nnnnnnnnnnnrrrrr, where n = PCB number
ex:576 (from 0->2047) and r = PCB revision (from 0->31).
18 uint16_t Identification of any PMBs.
20 uint8_t RAMDAC speed (0=175MHz, 1=220MHz).
21 uint8_t RAMDAC type (0=TVP3026, 1=TVP3027).
22 uint16_t Maximum PCLK of the ramdac.
24 uint16_t Maximum LDCLK supported by the WRAM memory.
26 uint16_t Maximum MCLK of base board.
28 uint16_t Maximum MCLK of 4Mb board.
30 uint16_t Maximum MCLK of 8Mb board.
32 uint16_t Maximum MCLK of board with multimedia module.
34 uint16_t Diagnostic test pass frequency.
36 uint16_t Default VGA mode1 pixel frequency.
38 uint16_t Default VGA mode2 pixel frequency.
40 uint16_t Date of last BIOS programming / update.
42 uint16_t Number of times BIOS has been programmed.
44 uint32_t Support for up to 32 hardware/software options.
48 uint32_t Support for up to 32 hardware/software features.
52 uint16_t Definition of VGA mode MCLK.
54 uint16_t Indicate the revision level of this header struct.
56 char[7] Unused.
63 uint8_t Check-sum byte.
Version 2:
Unless otherwise noted, all clock speeds stored in this version of the PInS
data are stored as the clock speed in MHz minus 100. To convert a stored
clock speed, C, to kHz, use ((C + 100) * 1000).
Offset Type Description
0 uint16_t PInS structure signature. This must be the 16-bit
value (stored little-endian) 0x412E.
2 uint8_t Length of the PInS data, in bytes. For version 2, this
must be 64.
3 uint8_t Reserved.
4 uint16_t Version of the structure. For version 2, this must be the
value (stored little-endian) 0x02XX.
6 uint16_t Date of last BIOS programming / update.
8 uint16_t Number of times BIOS has been programmed.
10 uint16_t Product ID.
12 char[16] Serial number of the board. NUL terminated string.
28 char[6] Parts list identification. NUL terminated string.
34 uint16_t Number and revision level of the PCB. Format (stored
little-endian): nnnnnnnnnnnrrrrr, where n = PCB number
ex:576 (from 0->2047) and r = PCB revision (from 0->31).
36 uint32_t Support for up to 32 hardware/software features.
40 uint8_t RAMDAC type.
41 uint8_t RAMDAC speed. Stored using standard clock encoding (see
above).
42 uint8_t PclkMax
43 uint8_t Memory clock. Stored using standard clock encoding (see
above).
44 uint8_t Maximum MCLK of base board.
45 uint8_t Maximum MCLK of 4Mb board.
46 uint8_t Maximum MCLK of 8Mb board.
47 uint8_t Maximum MCLK of board with multimedia module.
48 uint8_t TestClk
49 uint8_t Default VGA mode1 pixel frequency.
50 uint8_t Default VGA mode2 pixel frequency.
51 uint8_t MCTLWTST
52 uint8_t VidCtrl
53 uint8_t Maximum MCLK of 12Mb board.
54 uint8_t Maximum MCLK of 16Mb board.
55 char[8] Unused
63 uint8_t Check-sum byte
Version 3:
Unless otherwise noted, all clock speeds stored in this version of the PInS
data are stored as the clock speed in MHz minus 100. To convert a stored
clock speed, C, to kHz, use ((C + 100) * 1000).
Offset Type Description
0 uint16_t PInS structure signature. This must be the 16-bit
value (stored little-endian) 0x412E.
2 uint8_t Length of the PInS data, in bytes. For version 3, this
must be 64.
3 uint8_t Reserved.
4 uint16_t Version of the structure. For version 3, this must be the
value (stored little-endian) 0x03XX.
6 uint16_t Date of last BIOS programming / update.
8 uint16_t Number of times BIOS has been programmed.
10 uint16_t Product ID.
12 char[16] Serial number of the board. NUL terminated string.
28 char[6] Parts list identification. NUL terminated string.
34 uint16_t Number and revision level of the PCB. Format (stored
little-endian): nnnnnnnnnnnrrrrr, where n = PCB number
ex:576 (from 0->2047) and r = PCB revision (from 0->31).
36 uint8_t RAMDAC speed. Stored using standard clock encoding (see
above).
37 char[15] Unknown?
52 uint32_t OPTION? Stored little-endian.
Bits Meaning
0 - 4 Unknown?
5 0 = Reference PLL speed is 27.050MHz.
1 = Reference PLL speed is 14.318MHz.
6 - 31 Unknown?
56 uint16_t MEMRDBK?
58 uint32_t OPTION2?
62 char Unused
63 uint8_t Check-sum byte
Version 4:
Unless otherwise noted, all clock speeds stored in this version of the PInS
data are stored as the clock speed in MHz divided by 4. To convert a stored
clock speed, C, to kHz, use ((C * 4) * 1000).
Offset Type Description
0 uint16_t PInS structure signature. This must be the 16-bit
value (stored little-endian) 0x412E.
2 uint8_t Length of the PInS data, in bytes. For version 4, this
must be 128.
3 uint8_t Reserved.
4 uint16_t Version of the structure. For version 4, this must be the
value (stored little-endian) 0x04XX.
6 uint16_t Date of last BIOS programming / update.
8 uint16_t Number of times BIOS has been programmed.
10 uint16_t Product ID.
12 char[16] Serial number of the board. NUL terminated string.
28 char[6] Parts list identification. NUL terminated string.
34 uint16_t Number and revision level of the PCB. Format (stored
little-endian): nnnnnnnnnnnrrrrr, where n = PCB number
ex:576 (from 0->2047) and r = PCB revision (from 0->31).
36 char Unknown?
37 char Unknown?
38 uint8_t VCO max for system PLL
39 uint8_t VCO max for pixel PLL
40 char[13] Unknown?
53 uint8_t OPTION?
54 char[11] Unknown?
65 uint8_t System PLL? Stored using standard clock encoding (see
above).
66 char Unknown?
67 uint32_t OPTION3? This offset seems wrong, but that's what
matroxfb does.
71 char[15] Unknown?
86 uint16_t MEMRDBK?
88 char[4] Unknown?
92 uint32_t OPTIONx?
Bits Meaning
0 0 = Reference PLL speed is 27.050MHz.
1 = Reference PLL speed is 14.318MHz.
1 - 31 Unknown?
96 char[21] Unknown?
127 uint8_t Check-sum byte
Version 5:
Unless otherwise noted, all clock speeds stored in this version of the PInS
data are stored as the clock speed in MHz divided by 6 for version 0x500 or
by 8 for all other versions. To convert a stored clock speed, C, to kHz, on
version 0x0500, use ((C * 6) * 1000). For all other versions, use ((C * 8) *
1000).
Offset Type Description
0 uint16_t PInS structure signature. This must be the 16-bit
value (stored little-endian) 0x412E.
2 uint8_t Length of the PInS data, in bytes. For version 5, this
must be 128.
3 uint8_t Reserved.
4 uint16_t Version of the structure. For version 5, this must be the
value (stored little-endian) 0x05XX.
6 uint16_t Date of last BIOS programming / update.
8 uint16_t Number of times BIOS has been programmed.
10 uint16_t Product ID.
12 char[16] Serial number of the board. NUL terminated string.
28 char[6] Parts list identification. NUL terminated string.
34 uint16_t Number and revision level of the PCB. Format (stored
little-endian): nnnnnnnnnnnrrrrr, where n = PCB number
ex:576 (from 0->2047) and r = PCB revision (from 0->31).
36 uint8_t VCO max for system PLL. Stored using standard clock
encoding (see above).
37 uint8_t VCO max for video PLL. Stored using standard clock
encoding (see above).
38 uint8_t VCO max for pixel PLL. Stored using standard clock
encoding (see above).
39 char[9] Unknown?
48 uint32_t OPTION1?
52 uint32_t OPTION2?
56 char[38] Unknown?
94 uint32_t OPTION3?
98 uint32_t MCTLWTST?
102 uint32_t MEMMISC?
106 uint32_t MEMRDBK?
110 uint32_t OPTIONx?
Bits Meaning
0 0 = Reference PLL speed is 27.050MHz.
1 = Reference PLL speed is 14.318MHz.
1 - 31 Unknown?
114 uint16_t MEMINFO?
Bits Meaning
0 - 4 Unknown
5 - 6 0 = SDR memory installed?
1 = DDR memory installed
2 = Unknown
3 = Unknown
7 Unknown
8 EMRSWEN?
9 Has DLL?
10 Core uses MCTLWTST?
11 - 15 MCTLWTST values for core?
116 char[5] Unknown?
121 uint8_t VCO min for system PLL. Stored using standard clock
encoding (see above).
122 uint8_t VCO min for video PLL. Stored using standard clock
encoding (see above).
123 uint8_t VCO min for pixel PLL. Stored using standard clock
encoding (see above).
124 char[3] Unknown?
127 uint8_t Check-sum byte
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