Editing Talk:PS1 Emulation
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| Latest revision | Your text | ||
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0xDDD6C replace 48 07 14 21 to 38 60 00 00 | 0xDDD6C replace 48 07 14 21 to 38 60 00 00 | ||
0xE13C4 replace 60 00 00 00 to 38 60 00 00 | 0xE13C4 replace 60 00 00 00 to 38 60 00 00 | ||
== Ps1_netemu Commands Info == | == Ps1_netemu Commands Info == | ||
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Loading external commands is be possible in ps1_netemu. From this we can also figure out that sony call those configs "ad hoc params" which can be little bit misleading. Emulator expect them inside ISO.BIN.EDAT file. Offset depend if "optional header" exist or not. Values are little endian. | Loading external commands is be possible in ps1_netemu. From this we can also figure out that sony call those configs "ad hoc params" which can be little bit misleading. Emulator expect them inside ISO.BIN.EDAT file. Offset depend if "optional header" exist or not. Values are little endian. | ||
* Offset 0x424 or 0x824 in DAT file = Config revision in bcd format, that need to be higher than DB from emu (11624 for 4.86). Safe to use 0x200000. | |||
* Offset 0x424 Config revision in bcd format, that need to be higher than DB from emu (11624 for 4.86). Safe to use 0x200000. | * Offset 0x42C or 0x82C first config command | ||
* Offset 0x42C first config command | * Offset 0x430 or 0x830 param for first command | ||
* Offset 0x430 param for first command | |||
* This repeats 8 times as only 8 commands is supported. | * This repeats 8 times as only 8 commands is supported. | ||
* Command 2 is unsupported. | * Command 2 is unsupported. | ||
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**0 = ? (used by SCPS-18011 Um Jammer Lammy, and SLPS-01818 Langrisser IV & V Final Edition [Disc1of2]) | **0 = ? (used by SCPS-18011 Um Jammer Lammy, and SLPS-01818 Langrisser IV & V Final Edition [Disc1of2]) | ||
In Um Jammer Lammy is used together with command 0x13, so it was a bit doubtful if it was a mistake. But Langrisser IV & V Final Edition [Disc1of2] uses it too and is the only command used by this disc, so it "should" do something. Um Jammer Lammy in netemu 3.40 was fixed only with command 0x0/0x0 (id/data) | In Um Jammer Lammy is used together with command 0x13, so it was a bit doubtful if it was a mistake. But Langrisser IV & V Final Edition [Disc1of2] uses it too and is the only command used by this disc, so it "should" do something. Um Jammer Lammy in netemu 3.40 was fixed only with command 0x0/0x0 (id/data) | ||
=== Command 0x01 (netemu 3.40 up to 4.88) === | === Command 0x01 (netemu 3.40 up to 4.88) === | ||
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Value is integer that is later converted to double float using fcfid, and truncated to single precision by frsp.<br> | Value is integer that is later converted to double float using fcfid, and truncated to single precision by frsp.<br> | ||
I'm not familiar with CELL floating point unit quirks, but value could be just single precision float from the start, why complicate that so much?<br> | I'm not familiar with CELL floating point unit quirks, but value could be just single precision float from the start, why complicate that so much?<br> | ||
_xcdrom_thread related. | |||
=== Command 0x04 (netemu 3.40 up to 4.88) === | === Command 0x04 (netemu 3.40 up to 4.88) === | ||
*Valid values found: 0x4, 0x7, 0x14 (20d), 0x46 (70d), 0x64 (100d), 0xC8 (200d), 0xFFFFFF38 ( | *Valid values found: 0x4, 0x7, 0x14 (20d), 0x46 (70d), 0x64 (100d), 0xC8 (200d), 0xFFFFFF38 (????????) | ||
*Default value: 0 | *Default value: 0 | ||
*_xcdrom_thread related. | *_xcdrom_thread related. | ||
=== Command 0x05 (netemu 3.40 up to 4.88) === | === Command 0x05 (netemu 3.40 up to 4.88) === | ||
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*Default value: 0 | *Default value: 0 | ||
*_xcdrom_thread related. | *_xcdrom_thread related. | ||
=== Command 0x07 (netemu 4.83 up to 4.88) === | === Command 0x07 (netemu 4.83 up to 4.88) === | ||
*Default value: 0 | *Default value: 0 | ||
*_xcdrom_thread related. | *_xcdrom_thread related. | ||
=== Command 0x08 (netemu 3.40 up to 4.88) === | === Command 0x08 (netemu 3.40 up to 4.88) === | ||
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*Default value: 0 | *Default value: 0 | ||
*MDEC related? | *MDEC related? | ||
=== Command 0x14 (netemu 4.83 up to 4.88) === | === Command 0x14 (netemu 4.83 up to 4.88) === | ||
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=== Command 0x16 (netemu 4.83 up to 4.88) === | === Command 0x16 (netemu 4.83 up to 4.88) === | ||
*Default value: 0 | *Default value: 0 | ||
=== Command 0x17 (netemu 4.83 up to 4.88) === | === Command 0x17 (netemu 4.83 up to 4.88) === | ||
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*Default value: 0x3E8 | *Default value: 0x3E8 | ||
*PS1 GPU related. | *PS1 GPU related. | ||
=== Command 0x23 (netemu 4.83 up to 4.88) === | === Command 0x23 (netemu 4.83 up to 4.88) === | ||
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*0x02 = Enable Vertical Interlace bit in GP1 (08h) command in SPE writes (in renderer only). Emulator by default use hack where VI bit is ALWAYS disabled in spe. | *0x02 = Enable Vertical Interlace bit in GP1 (08h) command in SPE writes (in renderer only). Emulator by default use hack where VI bit is ALWAYS disabled in spe. | ||
Note from nocash docs about Vertical Interlace: ''"'''Interlace must be enabled to see all lines in 480-lines mode''' (interlace is causing ugly flickering, so a non-interlaced low resolution image is typically having better quality than a high resolution interlaced image, a pretty bad example are the intro screens shown by the BIOS).''"<br> | Note from nocash docs about Vertical Interlace: ''"'''Interlace must be enabled to see all lines in 480-lines mode''' (interlace is causing ugly flickering, so a non-interlaced low resolution image is typically having better quality than a high resolution interlaced image, a pretty bad example are the intro screens shown by the BIOS).''"<br> | ||
This suggest that games which eventually need 0x31, 0x02 will be ones that send GP1 commands with active bit 2(Vertical Resolution 1=480) and 5(Vertical Interlace) at the same time. Otherwise image will be cropped | This suggest that games which eventually need 0x31, 0x02 will be ones that send GP1 commands with active bit 2(Vertical Resolution 1=480) and 5(Vertical Interlace) at the same time. Otherwise image will be cropped. | ||
=== Command 0x32 (netemu 4.83 up to 4.88) === | === Command 0x32 (netemu 4.83 up to 4.88) === | ||
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// Boot is considered to be from disc if argv with game path is empty. Which make 0x38 with param 0x01 inaccessible, because there is no way to start disc game with netemu in official way (excluding games that ps1_emu launch with 0x15 cmd to ps1_netemu). | // Boot is considered to be from disc if argv with game path is empty. Which make 0x38 with param 0x01 inaccessible, because there is no way to start disc game with netemu in official way (excluding games that ps1_emu launch with 0x15 cmd to ps1_netemu). | ||
== Ps1_emu Commands Info == | == Ps1_emu Commands Info == | ||