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112 lines
3.1 KiB
Markdown
112 lines
3.1 KiB
Markdown
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# MKV
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AKA MK5
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* OS
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* Windows XP Embedded: revisions of [The Premiere 3](game/piu/prem3.md) and [The PREX 3](game/piu/prex3.md)
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* Linux: starting [Exceed](game/piu/exc.md)
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* [PIUIO](io.md#MK5IO) connected to the ISA bus
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* CPU
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* Intel Celeron 1 GHZ
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* Intel Celeron 1.3 GHZ
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* RAM: 128 MB
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* GPU (on-board)
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* Riva TNT 2, 32 MB
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*
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* Chipset
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* Nvidia NV11
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* VIA Apollo Pro133 AX (VT82C694X + VIA686B)
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* BIOS
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* PhoenixBIOS 4.0 Release 6.0
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* Disk media
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* CDROM based for [The Premiere 3](game/piu/prem3.md) and [The PREX 3](game/piu/prex3.md)
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* DVD based for [Exceed](game/piu/exc.md) beta
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* HDD based for [Exceed](game/piu/exc.md) release and newer
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* 7 segment display on the side shows current boot status/error codes
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* EEPROM to store game settings and high scores. Size increased (doubled?) comapred to [MK3](#mk-3)
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## 7 segment status and error codes
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This display next to the mainboard breakout connectors shows an 8-bit hex value indicating
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different stages of the boot process and errors.
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Errors are usually "stuck values". A healthy boot sequence has these numbers changing to show
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it progresses through the different stages
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### Healthy boot sequence
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The following is "transcribed" from a video recording of a healthy boot sequence (from power on
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to game title screen). All values are 8-bit hex values.
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* `FF`: Initial state shown right after power on
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* `81`: ???
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* `84`: ???
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* `85`: ???
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* `86`: ???
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* `87`: ???
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* `88`: ???
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* `08`: ???
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* `11`: ???
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* `0C`: ???
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* `28`: ???
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* `2E`: ???
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* `38`: ???
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* `09`: ???
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* `69`: ???
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* `49`: ???
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* `4A`: ???
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* `59`: ???
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* `52`: ???
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* `60`: Video output over VGA shows the Andamiro logo on white background, first actual video output
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visible
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* `98`: ???
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* `6A`: ???
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* `00`: ???
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* `01`: ???
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* `C0`: ???
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* `D2`: ???
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* `00`-`99`/`00`: Progress counting upwards from 0 (`00`) to 100 (`00`)
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* `FF`: ???
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* `88`: ???
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* `FF`: ???
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* `88`: ???
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* `A2`: booted from HDD, starting with andamiro MKV bootloader stage and stays also when in-game
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### Operating system/game booted
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Once the display shows `A2`, it's also flickering.
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The bottom segment of the first digit as well as the top left and bottom right segments of the
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second digit are used as HDD, CPU and ??? indicators.
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### Other codes
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* `01`: In BIOS menu
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### Errors
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#### Stuck at FF right after power on
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If the BIOS isn't loading, then it is stuck right after power on.
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This might indicate that something is wrong with the power to the mainboard. Ensure you are using
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the power distribution board of the MKV box and not have a ATX power supply connected directly to
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the mainboard. It powers, but doesn't seem to like that and stays stuck here immediately.
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#### Stuck at C0
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Operating system not found.
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This should also be visible on over VGA output with a message stating this on a connected screen.
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#### Stuck on B0
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CMOS checksum bad.
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This should also be visible on over VGA output with a message stating this on a connected screen.
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Probably the CMOS battery is empty, swap it, power cycle. Defaults are being loaded automatically.
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## Misc
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* USB keyboards work, e.g. to get into the BIOS by pressing F2 during boot
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