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BS-X BIOS/RAM map
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$7E0020-$7E0022 - 24-bit-address storage (for SPC stuff?)
$7E0088-$7E0089 - 16-bit Jump Address set at $80/9DDA, executed at $80/9E2F and $80/9F1F
$7E008F-$7E0091 - OR/NOR-Mask stuff used for data at $7E/7Exx at $80/9EB1
$7E009D-$7E009E - Number of values to do (X-coordinate) at $80/AF00 $7E009F-$7E00A0 - Number of rows to do (Y-coordinate) at $80/AF00
$7E0100 - Value to store in $2100 (FBLANK / Brightness) $7E0101 - $2101 buffer - Object Size and Object Base
$7E0104 - $2105 buffer - BG Mode $7E0105 - $2106 buffer - Mosaic $7E0106 - $2107 buffer - BG1 Tilemap Address and Mirroring $7E0107 - $2108 buffer - BG2 Tilemap Address and Mirroring $7E0108 - $2109 buffer - BG3 Tilemap Address and Mirroring $7E0109 - $210A buffer - BG4 Tilemap Address and Mirroring $7E010A - $210B buffer - BG1/2 Tileset Address $7E010B - $210C buffer - BG3/4 Tileset Address $7E010C - $211A buffer - Mode 7 Rotation/Scaling Mode Settings $7E010D - $2123 buffer - Window BG1/BG2 Mask Settings $7E010E - $2124 buffer - Window BG3/BG4 Mask Settings $7E010F - $210D buffer - BG1 H-Scroll Low Byte $7E0110 - $210D buffer - BG1 H-Scroll High Byte $7E0111 - $210E buffer - BG1 V-Scroll Low Byte $7E0112 - $210E buffer - BG1 V-Scroll High Byte $7E0113 - $210F buffer - BG2 H-Scroll Low Byte $7E0114 - $210F buffer - BG2 H-Scroll High Byte $7E0115 - $2110 buffer - BG2 V-Scroll Low Byte $7E0116 - $2110 buffer - BG2 V-Scroll High Byte $7E0117 - $2111 buffer - BG3 H-Scroll Low Byte $7E0118 - $2111 buffer - BG3 H-Scroll High Byte $7E0119 - $2112 buffer - BG3 V-Scroll Low Byte $7E011A - $2112 buffer - BG3 V-Scroll High Byte $7E011B - $2113 buffer - BG4 H-Scroll Low Byte $7E011C - $2113 buffer - BG4 H-Scroll High Byte $7E011D - $2114 buffer - BG4 V-Scroll Low Byte $7E011E - $2114 buffer - BG4 V-Scroll High Byte $7E011F - $2125 buffer - Window OBJ/MATH Mask Settings $7E0120 - $2126 buffer - Window 1 Left Position (X1) $7E0121 - $2127 buffer - Window 1 Right Position (X2) $7E0122 - $2128 buffer - Window 2 Left Position (X1) $7E0123 - $2129 buffer - Window 2 Right Position (X2) $7E0124 - $212A buffer - Window 1/2 Mask Logic (BG1-BG4) $7E0125 - $212B buffer - Window 1/2 Mask Logic (OBJ/MATH) $7E0126 - $212C buffer - Main Screen Designation $7E0127 - $212E buffer - Window Area Main Screen Disable $7E0128 - $212D buffer - Sub Screen Designation $7E0129 - $212F buffer - Window Area Sub Screen Disable $7E012A - $2130 buffer - Color Math Control Register A $7E012B - $2131 buffer - Color Math Control Register B
$7E012D - $2132 buffer - Color Math Sub Screen Backdrop Color RED (without #$20) $7E012E - $2132 buffer - Color Math Sub Screen Backdrop Color GREEN (without #$40) $7E012F - $2132 buffer - Color Math Sub Screen Backdrop Color BLUE (without #$80) $7E0130 - $2133 buffer - Display Control 2
$7E0135 - $4200 buffer - NMI/VIRQ/HIRQ/Auto Joypad
$7E013A - $420C buffer - HDMA Flags
$7E014C-$7E014D - Used at Program Start $80/906A and when Screen Settings are changed at $94/BA1B $7E014E-$7E014F - Used at Program Start $80/906A and when Screen Settings are changed at $94/BA1B $7E0150-$7E0151 - Joypad 1 Input of this frame $7E0152-$7E0153 - Joypad 2 Input of this frame $7E0154-$7E0155 - Joypad 1 buttons pushed in this frame $7E0156-$7E0157 - Joypad 2 buttons pushed in this frame
$7E015C-$7E015D - Joypad 1 Input of last frame
$7E0164-$7E0165 - Joypad 2 Input of last frame
$7E016C-$7E017B - VRAM DMA Pipeline at $80/8CDC - Type of DMA - 01 CGRAM ; 02 VRAM Write ; 03 VRAM Read $7E017C-$7E018B - VRAM DMA Pipeline at $80/8CDC - Value for $2115/$2121 $7E018C-$7E019B - VRAM DMA Pipeline at $80/8CDC - Value for $2116 $7E019C-$7E01AB - VRAM DMA Pipeline at $80/8CDC - Value for $2117 $7E01AC-$7E01BB - VRAM DMA Pipeline at $80/8CDC - Value for $4312 $7E01BC-$7E01CB - VRAM DMA Pipeline at $80/8CDC - Value for $4313 $7E01CC-$7E01DB - VRAM DMA Pipeline at $80/8CDC - Value for $4314 $7E01DC-$7E01EB - VRAM DMA Pipeline at $80/8CDC - Value for $4315 $7E01EC-$7E01FB - VRAM DMA Pipeline at $80/8CDC - Value for $4316 $7E01FC-$7E020B - VRAM DMA Pipeline at $80/8CDC - Flag if Pipeline Slot is occupied?
$7E020E - Mouse related, Seems to be: #$00 = No Mouse #$01 Mouse in Port 1, #$02 Mouse in Port 2
$7E0211 - Mouse Input, Port 1 - Low Byte $7E0212 - Mouse Input, Port 2 - Low Byte $7E0213 - Mouse Input, Port 1 - High Byte $7E0214 - Mouse Input, Port 2 - High Byte
$7E021B - Value stored in $2100 (FBLANK / Brightness) $7E021C - Flag to update CGRAM
$7E0224-$7E0225 - ? (Used at $80/8358; multiplication at $80/8363) $7E0226 - ? (multiplication at $80/8363)
$7E0627-$7E0628 - (Frame Counter?) $7E0629-$7E062A - (Frame Counter?) / 60^1 (Second Counter?) $7E062B-$7E062C - (Frame Counter?) / 60^2 (Minute Counter?) $7E062D-$7E062E - (Frame Counter?) / 60^3 (60 Hour Counter?) $7E062F-$7E0631 - 24-bit-address of a subroutine that gets executed during NMI
$7E0633-$7E0635 - Contains a jump address at Program Start ($80/90D0)
$7E0637-$7E0639 - NMI JUMP ADDRESS BUFFER A: Buffer for $7E062F-31 $7E063A - If MSB is set, the address in $7E0637-9 is not used $7E063B-$7E063D - Some Address buffer, see $94/8459
$7E063F-$7E0640 - Used at Program Start $80/90B8 $7E0641-$7E0642 - Used at Program Start $80/90B8 $7E0643-$7E0644 - Flag: NMI Handler is active $7E0645 - Index for Data in $$80/913A
$7E064A-$7E064C - 24-bit jump address, see $80/913A $7E064D-$7E065F - Jump Address Buffer, see $80/913A - Slots contain 3 bytes address and a 4th byte flags
$7E065D-$7E065F - 24-bit Address (Set at $80/AA0C)
$7E0661-$7E0662 - ? (Used at $80/8F9D) $7E0663-$7E0664 - ? (Used at $80/8FA3) $7E0665-$7E0666 - Buffer for Direct Page (at Program Start) $7E0667-$7E0668 - Frame Counter (for intro stuff) at $94/85ED $7E0669-$7E066A - Frame Counter (for intro stuff) at $94/85ED $7E066B-$7E066C - Frame Counter (for intro stuff) - A second one if a second one is needed $7E066D-$7E066E - Frame Counter (for intro stuff)
$7E0671-$7E0673 - NMI JUMP ADDRESS BUFFER B: For an alternative 24-bit jump address for $637–9 (see $94/8572)
$7E0675 - Frame Counter for Screen Fade Out at $94/8534
$7E0677 - Frame Counter Compare Value for Screen Fade Out at $94/8534
$7E06CA-$7E06D9?- Sound related - Store Index for value in $7E/06EA $7E06DA-$7E06E9?- Sound related - gets stored in $2140/$070E at $80/9835 $7E06EA-$7E06F9?- Sound related $7E06FA-$7E0709?- Sound related - gets stored in $2143/$0711 at $80/97FF
$7E070A - Sound related $7E070B - Sound related $7E070C - Sound related $7E070D - Sound related $7E070E - Sound related - value currently in $2140(?) $7E070F - Sound related - value currently in $2141(?) $7E0710 - Sound related - value currently in $2142(?) $7E0711 - Sound related - value currently in $2143(?)
$7E0718 - Sound related - flag? see $80/97D5 / $80/97F1 $7E0719 - Sound related
$7E071C-$7E071E - Value (16-bit Jump Address?) for $88/9 at $80/9AF0 - 24-bit address at $80/A709
$7E0721-$7E0722 - Jump Table Pointer (of sorts) at $80/9DDA - and at $80/A605 (Textbox related) $7E0723-$7E0724 - Jump Table Pointer (of sorts) at $80/9DDA
$7E0727-$7E0728 - Textbox - VRAM Address for a DMA to transfer the Textbox Tiles $7E0729-$7E072A - Textbox - VRAM Address for a DMA to transfer the Textbox Tiles $7E072B-$7E072C - Textbox - Position in Row (X-Coordinate) $7E072D-$7E072E - Textbox - Position in Column (Y-Coordinate) $7E072F-$7E0730 - Textbox - Value to store as tile
$7E0735-$7E0736 - ? (Used at $80/A605 and $80/A217) - textbox related $7E0737-$7E0738 - ? (Used at $80/A605 and $80/A217 ; compare value for $0735/6) - textbox related
$7E073D-$7E073E - ? (Used at $80/AA0C)
$7E0742-$7E0743 - Flag for a VRAM DMA to transfer the Textbox Tiles (at $80/9C4E) $7E0744-$7E0745 - Textbox related, see $80/A669
$7E0A13-$7E0A14 - Used at Program Start $80/906A
$7E0B92-$7E0B93 - ? (Used at $80/AA0C) $7E0B94-$7E0B95 - ? (Used at $80/AA0C)
$7E0B9A-$7E0B9B - ? (Used at $80/AA0C)
$7E0BA4-$7E0BA5 - Rectangle X-coordinate startpoint at $81/8797 $7E0BA6-$7E0BA7 - Rectangle Y-coordinate startpoint at $81/8797
$7E0BAA-$7E0BAB - ? (used at $81/88BA) - Number of the Color to begin at $81/8688 $7E0BAC-$7E0BAD - ? (used at $81/88BA) - Number of Colors to do at $81/8688 $7E0BAE-$7E0BAF - ? (used at $81/88BA) $7E0BB0-$7E0BB1 - ? (used at $81/88BA)
$7E0BB4-$7E0BB5 - VRAM Address - Data from $7E/8C15 $7E0BB6 - Flag for VRAM DMA during NMI, see $80/AC5E
$7E0BB8-$7E0BB9 - ? (used at $81/88BA)
$7E0C1B-$7E0C1C - Flag at $80/B68D and $80/B6B4
$7E0C27-$7E0C29 - ? (used at $80/A9A4) - VRAM DMA Source address at $80/B381 $7E0C2A-$7E0C2C - VRAM DMA Source address at $80/B381 $7E0C2D-$7E0C2F - Source address for Palette 0 at $80/B93D $7E0C30-$7E0C31 - ? (used at $80/B47D) textbox related? $7E0C32-$7E0C3D?- Textbox X-Coordinate related (see $80/B341 and $80/B51B) $7E0C3E-$7E0C49?- Textbox Y-Coordinate related (see $80/B51B) $7E0C4A-$7E0C?? - Textbox-related (see $80/B569) $7E0C56-$7E0C?? - Textbox-related (see $80/B569) $7E0C62-$7E0C6D?- Textbox X-Coordinate related (see $80/B341) $7E0C6E-$7E0C79?- Textbox Y-Coordinate related (used at $80/A9C0) $7E0C7A-$7E0C?? - Textbox-related (see $80/B569) $7E0C86-$7E0C?? - ? (used at $80/A9A4) (Table for $0723)
$7E0C9E-$7E0C?? - Textbox-related (see $80/B569 and $80/A9C0)
$7E0CAA-$7E0C?? - Textbox related? (used at $80/A9C0)
$7E0CB6-$7E0CB7 - Animation-Step related - "Token Vector No-Repition flag". If set, only one Token gets executed at $81/C43B /// Load $7E0CB8-$7E0CB9 - See $81/C29A - If MSB of $0CB9 is set, no Token Slot Data gets executed (see $81/C367) $7E0CBA-$7E0CBB - Token Data Execution related - set to #$02 at $81/C43B $7E0CBC-$7E0CBD - ? (used at $81/C39F) Compare value $7E0CBE-$7E0CBF - ? (used at $81/C39F) Compare value $7E0CC0-$7E0CC1 - ? (used at $81/C39F) Frame(?) counter? $7E0CC2-$7E0CC3 - Related to $7E1650, see $81/C520
$7E0CD2-$7E0CD3 - Related to $7E1650, see $81/C520 $7E0CD4-$7E0CD5 - Related to $7E1650, see $81/C520
$7E0CEC - Token Vector table Index (loaded at $81/C3FB)
$7E0D18-$7E0D19 - See $81/C4DD $7E0D1A-$7E0D41 - ANIMATION STEP - Ominous $26 Unit - BANK of Animation Step Data(?) see $81/C520
$7E0D6A-$7E0D91 - ANIMATION STEP - Ominous $26 Unit - Address of Animation Step Data(?) see $81/C520
$7E0E82-$7E0E83 - ? (used at $81/C149)
$7E1152-$7E1178?- (Ominous $26 Unit?) --- See $81/C43B
$7E117A-$7E11A1?- 16-bit flag register, only bit 0 is used. If it is set, this Token Vector is not executed.
$7E11CA-$7E11F1?- 16-bit address register, used at $81/BA53
$7E121A-$7E1241 - Ominous $26 Unit - see $81/BA2A $7E1242-$7E1269 - Ominous $26 Unit - see $81/BA2A
$7E127E-$7E127F - Sprite Palette related at $81/C80E and $81/CA9C
$7E127E-$7E127F - Sprite Palette related at $81/C80E and $81/CA9C $7E1280-$7E1281 - Sprite Palette related at $81/C80E and $81/CA9C $7E1282-$7E1283 - Sprite Palette related at $81/CA9C $7E1284-$7E12A5 - Mysterious $20 Unit - see $81/C80E (Sprite Palette related at $81/CA9C)
$7E12A8-$7E12CF - Suspicious $28/$26 Unit - see $81/C80E $7E12D0-$7E12F7 - Suspicious $28/$26 Unit - see $81/C80E $7E12F8-$7E1321 - Suspicious $28/$26 Unit - see $81/C80E $7E1322-$7E1349 - Suspicious $28/$26 Unit - see $81/C80E $7E134A-$7E1371 - Suspicious $28/$26 Unit - see $81/C80E $7E1372-$7E139A - Suspicious $28/$26 Unit - see $81/C80E
$7E13D1 - Some Download(!?!) related flag?
$7E13DF - Some Flag at $F231
$7E143F - Error Counter at Program Start Up? $7E1440 - FLASHCART related - (See $80/C177) $7E1441 - FLASHCART related - (See $80/C177) Index for Jump Table at $80/BD79, gets executed at $80/BD6C
$7E1628-$7E164F?- ? (used at $81/C49A - Animation related?) $7E1650-$7E1677 - ANIMATION STEP - Addition/subrtraction value for X/Y-Coordinate $7E1678-$7E169F?- ? (used at $81/C49A - Animation related?) $7E16A0-$7E16C7?- ? (used at $81/C49A - Animation related?) $7E16C8-$7E16EF?- ? (used at $81/C49A - Animation related?) $7E16F0-$7E17?? - ? (used at $81/C49A - Animation related?)
$7E1790-$7E17B7 - Ominous $26 Unit - see $81/BA2A
$7E17B8-$7E17?? - Address part of a 24-bit address that points to a Token Vector Index; see $81/C3FB $7E17E0-$7E1807 - Bank of a 24-bit address that points to a Token Vector Index; see $81/C3FB --- SLOT EMPTY IF = #$00
$7E1808-$7E182F - (Ominous $26 Unit?) --- ADDRESS for 24-bit address for Token Data at $81/C43B $7E1830-$7E1857 - Ominous $26 Unit - see $81/BA2A --- BANK for 24-bit address for Token Data at $81/C43B --- SLOT NOT EXECUTED IF = #$00 $7E1858-$7E187F - =#$00 Token Handler (set in 17B8/E0) gets executed several times / !=#$00 executed once $7E1880-$7E18?? - (Ominous $26 Unit?) --- No-Repition flag (§0CB6) storage at $81/C43B
$7E1920-$7E19?? - ? (used at $81/B779)
$7E1998-$7E1999 - ? (used at $81/A183 and $81/A1AB)
$7E19A4-$7E19A5 - Added to loaded Data Byte at $81/C00D - Often used in Token Handlers
$7E1C00-$7E1E1F - OAM buffer $7E1E20 - Number of used sprites (gets incremented by 4 for every used sprite) $7E1E21 - Jump Table Index at $80/8A14 $7E1E22-$7E1EFF - Stack
$7E2000-$7E21FF - CGRAM buffer
$7E7600-$7E7DFF - Textbox Text Tiles Buffer $7E7E00-$7E???? - ? $7E8200-$7E???? - ?
$7E8715-$7E8716 - Used at Program Start $80/906A
$7E8C15-$7E9414 - Buffer for VRAM data, see $80/AC5E
$7E99D9 - FLASHCART related - (value for $1441; see $80/C177)
$7FC000-$7F???? - ? (used at $81/C968)
Internal Data for BS-X BIOS
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