Differences

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--- biosfunctions [2025/02/13 20:06] – created root
+++ biosfunctions [2025/02/19 19:22] (current) – root
@@ Line 11: / Line 11: @@
 TODO categorize these
 </WRAP>
-==== (TBD) Default Interrupt Handler ====
+==== BiosDefaultInterrupt ====
 Offset: 0x0604
+<code C>void BiosDefaultInterrupt(void)</code>
+Default interrupt handler, turns off printer? and halts
-Turns off printer? and halts
-==== BiosVdpMode ====
-Offset: 0x668
+==== BiosVdpMode ====
+Offset: 0x0668
+<code C>void BiosVdpMode(uchar controllerScanMode, uchar videoHeight240)</code>
 Sets VDP controller scanning mode and video height
+controllerScanMode: bitfield, 1=mouse, 2=gamepad
 ==== BiosGetSealType ====
+Offset: 0x115C
+<code C>uint BiosGetSealType(void)</code>
+Detect inserted seal cartridge type from sense switches
 ==== BiosDecompress4bit ====
+Offset: 0x437C
+<code C>??? BiosDecompress4bit(void* decompressInfo, void* output)</code>
+Decompresses 4-bit graphical data, algo unknown
 ==== BiosInitSoundTransmission ====
+Offset: 0x613C
+<code C>void BiosInitSoundTransmission(void)</code>
+Initializes sound timer and serial port
 ==== BiosPlayBgm ====
+Offset: 0x61A0
+<code C>void BiosPlayBgm(void* soundState, uchar unk, ushort trackIndex, void** trackList)</code>
+Play a music track from a list
 ==== BiosPlaySfx ====
+Offset: 0x61B8
+<code C>void BiosPlaySfx(void* soundState, uchar unk, ushort sfxIndex, void** sfxList)</code>
+Play a sound effect from a list
 ==== BiosUpdateBgm ====
+Offset: 0x6238
+<code C>void BiosUpdateBgm(void* soundState, uint unk)</code>
+Update music playback (call on timer0 interrupt)
+Unk param might be maximum data transfer size
 ==== BiosDma ====
+Offset: 0x66D0
+<code C>void BiosDma(void* dmaList, int hwChannel)</code>
+Trigger a chain of DMA transfers
 ==== BiosVsyncIfDma ====
+Offset: 0x6A0E
+<code C>void BiosVsyncIfDma(void* dmaList)</code>
+Only vsyncs if the DMA list is valid
 ==== BiosVsyncDma ====
+Offset: 0x6A48
+<code C>void BiosVsyncDma(void* dmaList)</code>
+Calls BiosVsync and BiosDma(param, 3)
 ==== BiosVsync ====
+Offset: 0x6A5A
+<code C>void BiosVsync(void)</code>
+Wait for vsync, read controller register to memory
 ==== BiosSoundChannels ====
+Offset: 0x6AC0
+<code C>void BiosSoundChannels(uint channelMode)</code>
+Sets sound channel configuration
+mode 0: 4ch, 1: 3ch + rhythm, 2: 3ch, others: 1ch
 ==== BiosSoundVolume ====
+Offset: 0x6B50
+<code C>void BiosSoundVolume(uint vol23, uint vol4)</code>
+Sets sound channel volume control
+volume for ch2/3 and ch4; 0: -4dB, 1: -2dB, 2: 0dB. ch1 always 0dB.
 ==== BiosSoundDemo ====
-==== Unidentified Decompressor ====
+Offset: 0x6B86
+<code C>void BiosSoundDemo(void)</code>
+Toggles built-in demo music
+==== BiosUnknownDecomp? ====
+Offset: 0x7D96
+<code C>??? BiosUnknownDecomp?(???)</code>
+Some kind of decompression function
 ===== Interrupt Handlers =====
 ==== BiosAutoUpdateBgm ====
+Offset: 0x648C
+<code C>void BiosAutoUpdateBgm(void)</code>
+Auto call BiosUpdateBgm with pointer at biosAutoSoundState
+Use as alternative to creating your own interrupt handler.
 ===== Math Functions =====
 ==== BiosColorInverseGray ====
+Offset: 0x2D68
+<code C>ushort BiosColorInverseGray(ushort color)</code>
+Compute 5bit grayscale from inverse of 15bit RGB
+Unknown why it's the inverse. Preserves MSB.
 ==== BiosValueBlendQuarter ====
+Offset: 0x2DC6
+<code C>uchar BiosValueBlendQuarter(uchar valueA, uchar valueB)</code>
+Blend 3/4 of value A with 1/4 of value B (bytes)
 ==== BiosColorBlendQuarter ====
+Offset: 0x2DE0
+<code C>ushort BiosColorBlendQuarter(ushort colorA, ushort colorB)</code>
+Blend 3/4 of color A with 1/4 of color B
 ==== BiosMulS16 ====
+Offset: 0x2E68
+<code C>int BiosMulS16(short a, short b)</code>
+Signed 16bit multiply, 32bit result
 ==== BiosMulU16 ====
+Offset: 0x2E72
+<code C>uint BiosMulU16(ushort a, ushort b)</code>
+Unsigned 16bit multiply, 32bit result
 ==== BiosDivU16 ====
+Offset: 0x2E7C
+<code C>ushort BiosDivU16(ushort a, ushort b)</code>
+Unsigned 16bit divide, 16bit result
 ==== BiosDivS16 ====
+Offset: 0x2EA6
+<code C>short BiosDivS16(short a, short b)</code>
+Signed 16bit divide, 16bit result
 ==== BiosDivS32 ====
+Offset: 0x2EDE
+<code C>int BiosDivS32(int a, int b)</code>
+Signed 32bit divide, 32bit result
 ===== Graphics =====
 ==== BiosPlotLines ====
-==== BiosPlotPolygons (TBD) ====
+Offset: 0x37A0
+<code C>void BiosPlotLines(short data[], uchar colors[], uchar buf[], short bufW, short bufH, bool bufFmt)</code>
+Plots a set of colored vertices joined by lines
+==== BiosPlotPolygons? ====
+Offset: 0x39AC
+<code C>??? BiosPlotPolygons?(???)</code>
+Plots polygons?
 ===== Internal Use =====
 ==== _B_PrintOp1 ====
+Offset: 0x06D4
+<code C>??? _B_PrintOp1(???)</code>
+Print operation
 ==== _B_PlotPointInBuffer ====
+Offset: 0x394E
+<code C>??? _B_PlotPointInBuffer(???)</code>
+Plots a point following some rules
 ==== _B_PlotPointSpecial ====
+Offset: 0x3C76
+<code C>??? _B_PlotPointSpecial(???)</code>
+Plots a 4bpp point with some special modes?
 ==== _B_PlayBgmPointer ====
+Offset: 0x61D8
+<code C>void _B_PlayBgmPointer(void* soundState, uchar unk, void* track, void** trackList)</code>
+Play a music track by pointer
 ==== _B_PlaySfxPointer ====
+Offset: 0x6374
+<code C>void _B_PlaySfxPointer(void* soundState, uchar unk, void* sfx)</code>
+Play a sound effect by pointer
 ===== Not yet analyzed =====
-  * 0x069C
+  * 0x069C - ? Does something with sensor and printer registers
-  * 0x0FD6
+  * 0x0FD6 - ? Printing function 1
-  * 0x101C
+  * 0x101C - ? Printing function 2
-  * 0x1064
+  * 0x1064 - ? Printing function 3
-  * 0x10AC
+  * 0x10AC - ? Moves some data during print
-  * 0x10F4
+  * 0x10F4 - ? Moves some data during print
-  * 0x1140
+  * 0x1140 - ? Moves some data during print
-  * 0x1174
+  * 0x1174 - ? Returns 2 if no seal cartridge inserted
-  * 0x1198
+  * 0x1198 - ?
-  * 0x1248
+  * 0x1248 - ? DMA print data strip to printer driver (internal)
-  * 0x128E
+  * 0x128E - ?
-  * 0x134C
+  * 0x134C - ? Something to do with SFX, init?
-  * 0x13B0
+  * 0x13B0 - ? Triggers some unknown IO read
-  * 0x1408
+  * 0x1408 - ?
-  * 0x1464
+  * 0x1464 - ? Does a bit of math
-  * 0x157E
+  * 0x157E - ? Does a bit of math
-  * 0x15D4
+  * 0x15D4 - ? Small
-  * 0x15F2
+  * 0x15F2 - ? Small
-  * 0x15FE
+  * 0x15FE - ? Small
-  * 0x162C
+  * 0x162C - ?
-  * 0x1652
+  * 0x1652 - ? Small
-  * 0x1662
+  * 0x1662 - ? Small
-  * 0x1690
+  * 0x1690 - ?
-  * 0x17F4
+  * 0x17F4 - ?
-  * 0x19BC
+  * 0x19BC - ?
-  * 0x1A0C
+  * 0x1A0C - ?
-  * 0x1B76
+  * 0x1B76 - ?
-  * 0x1B9C
+  * 0x1B9C - ?
-  * 0x1C04
+  * 0x1C04 - ? Small
-  * 0x1C2C
+  * 0x1C2C - ? Runs printer motor to reset position?
-  * 0x1CA0
+  * 0x1CA0 - ?
-  * 0x1CF4
+  * 0x1CF4 - ?
-  * 0x1DDE
+  * 0x1DDE - ? Small
-  * 0x1E1C
+  * 0x1E1C - ?
-  * 0x1F5E
+  * 0x1F5E - ?
-  * 0x2038
+  * 0x2038 - ?
-  * 0x20EC
+  * 0x20EC - ?
-  * 0x212E
+  * 0x212E - ?
-  * 0x2148
+  * 0x2148 - ?
-  * 0x2382
+  * 0x2382 - ?
-  * 0x2598
+  * 0x2598 - ?
-  * 0x2798
+  * 0x2798 - ?
-  * 0x2A24
+  * 0x2A24 - ?
-  * 0x2AD0
+  * 0x2AD0 - ?
-  * 0x2B0E
+  * 0x2B0E - ?
-  * 0x2B48
+  * 0x2B48 -
-  * 0x2F74
+  * 0x2F74 -
-  * 0x3088
+  * 0x3088 -
-  * 0x3560
+  * 0x3560 -
-  * 0x35E6
+  * 0x35E6 -
-  * 0x36BA
+  * 0x36BA -
-  * 0x3736
+  * 0x3736 -
-  * 0x3E64
+  * 0x3E64 -
-  * 0x3E9C
+  * 0x3E9C -
-  * 0x3EF0
+  * 0x3EF0 -
-  * 0x3F48
+  * 0x3F48 -
-  * 0x3FD8
+  * 0x3FD8 -
-  * 0x40DC
+  * 0x40DC -
-  * 0x4186
+  * 0x4186 -
-  * 0x429C
+  * 0x429C -
-  * 0x436A
+  * 0x436A -
-  * 0x445C
+  * 0x445C -
-  * 0x452C
+  * 0x452C -
-  * 0x4640
+  * 0x4640 -
-  * 0x47A4
+  * 0x47A4 -
-  * 0x49A4
+  * 0x49A4 -
-  * 0x4B20
+  * 0x4B20 -
-  * 0x4BA8
+  * 0x4BA8 -
-  * 0x4C38
+  * 0x4C38 -
-  * 0x4CDE
+  * 0x4CDE -
-  * 0x4D22
+  * 0x4D22 -
-  * 0x4E34
+  * 0x4E34 -
-  * 0x4FE4
+  * 0x4FE4 -
-  * 0x5060
+  * 0x5060 -
-  * 0x5098
+  * 0x5098 -
-  * 0x5138
+  * 0x5138 -
-  * 0x51C8
+  * 0x51C8 -
-  * 0x542E
+  * 0x542E -
-  * 0x544C
+  * 0x544C -
-  * 0x5474
+  * 0x5474 -
-  * 0x54B8
+  * 0x54B8 -
-  * 0x5574
+  * 0x5574 -
-  * 0x55B8
+  * 0x55B8 -
-  * 0x55FC
+  * 0x55FC -