====== IOCS WORK MANUAL ======
====IOCS Work List(ROM version 1.10)====
===Keyboard===
^Address^Size^Description^
|$800|16.b|Key press state|
|$810| 1.b|Keyboard LED status|
|$811| 1.b|Shift key state|
|$812| 1.w|Key buffer data bytes|
|$814| 1.l|〃	    write pointer|
|$818| 1.l|〃	    read pointer|
|$81c|64.w|key buffer|

===Serial===
^Address^Size^Description^
|$89c| 1.w|RS-232C receive buffer data byte count|
|$89e| 1.l|〃	〃	    write pointer|
|$8a2| 1.l|〃	〃	    read pointer|
|$8a6|64.w|〃	receive buffer|
|$926| 1.w|〃	communication mode|
|$928| 1.b|〃	 SI/SO   State 0:SO   1:SI (bit0:Receive bit1:Send)|
|$929| 1.b|〃	XON/XOFF State 0:XOFF 1:XON(〃)|

===Mouse===
^Address^Size^Description^
|$92a| 1.w|Mouse data receive byte count|
|$92c| 1.l|〃	    receive buffer write pointer|
|$930| 3.b|〃	    receive buffer|
|$933| 1.b|Current MSCTRL terminal state|
|$934| 1.l|Mouse receive data processing address (soft keyboard)|
|$948| 1.l|〃			    (mouse cursor)|
|$93c| 1.b|CRT mode|

===T-VRAM===
^Address^Size^Description^
|$93d| 1.b|Number of graphic pages(?)|
|$93e| 1.l|Text number of bytes in 1 line|
|$942| 1.w|Text operation target page number|
|$944| 1.l|〃		starting address of plane|
|$948| 1.l|Text display start address offset|
|$94c| 1.l|Start address of soft keyboard drawing plane(X68000 only)|
|$950| 1.w|〃		display X coordinate|
|$952| 1.w|〃		Y|
|$954| 1.w|Text clipping range (X minimum value)|
|$956| 1.w|〃			(Y minimum value)|
|$958| 1.w|〃			(X maximum value+1)|
|$95a| 1.w|〃			(Y maximum value+1)|

===G-VRAM===
^Address^Size^Description^
|$95c| 1.l|Start address of graphics operation page|
|$960| 1.l|Number of bytes per line 〃|
|$964| 1.w|〃	    screen color number-1 (not available if 0)|
|$966| 1.w|〃	    drawing color code|
|$968| 1.w|〃	    clipping range (X minimum value)|
|$96a| 1.w|〃			    (Y minimum value)|
|$96c| 1.w|〃			    (X maximum value)|
|$96e| 1.w|〃			    (Y maximum value)|

===Text Processing===
^Address^Size^Description^
|$970| 1.w|Number of text digits - 1|
|$972| 1.w|Number of text rows - 1|
|$974| 1.w|Cursor X coordinate|
|$976| 1.w|〃	Y coordinate|
|$978| 1.l|BEEP sound PCM data address|
|$97c| 1.w|〃	    Data length|
|$97e| 1.l|Extended ESC sequence processing address|
|$982| 1.l|ESC sequence buffer write pointer|
|$986|10.b|ESC sequence buffer (from ESC next)|
|$990| 1.b|1st byte of double-byte character|
|$991| 1.b|Cursor display status (0:off !0:on)|
|$992| 1.b|Cursor flashing switch (0:off !0:on)|
|$993| 1.b|Application cursor flashing switch (0:on !0:off)|
|$994| 1.b|Text display color|
|$995| 1.b|〃	      save buffer|
|$996| 1.l|cursor coordinate storage buffer|

===Font Addresses===
^Address^Size^Description^
|$99a| 1.l|Font address of external character group 0|
|$99e| 1.l|〃	    １〃|
|$9a2| 1.l|〃	    ２〃|
|$9a6| 1.l|〃	    ３〃|
|$9aa| 1.l|〃	    ４〃|
|$9ae| 1.l|〃	    ５〃|

===Perihpheral Timers===
^Address^Size^Description^
|$9b2| 1.w|Mouse data receive timer initial value|
|$9b4| 1.w|〃		timer counter|
|$9b6| 1.l|〃		processing address|
|$9ba| 1.w|Cursor flashing timer initial value|
|$9bc| 1.w|〃		timer counter|
|$9be| 1.l|〃		processing address|
|$9c2| 1.w|FD motor stop timer initial value|
|$9c4| 1.w|〃		timer counter|
|$9c6| 1.l|〃		processing address|
|$9ca| 1.w|Alarm power off timer initial value|
|$9cc| 1.w|〃		timer counter|
|$9ce| 1.l|〃		processing address|

===Misc===
^Address^Size^Description^
|$9d2| 1.l|Time to power off|
|$9d6| 1.l|Uptime (1 minute granularity)|
|$9da| 1.b|Setting value of OPM register $1b| 
|$9db| 1.b|Unused|
|$9dc| 1.b|Graphics screen usage mode|
|$9dd| 1.b|Text    〃|
|$9de| 1.b|ROM debugger start switch (0: off !0: on)|
|$9df| 1.b|How to start|
|$9e0| 1.b|Startup unit number(PDA)|

===Peripheral Status===
^Address^Size^Description^
|$9e1| 1.b|FD  drive status (bit 7 = 1: accessing bit 6 = 1: motor on) \\ %10	During access, motor on \\ %01 Access terminated, motor on on(turned off by Timer-C interrupt) \\ %00 Access terminated, motor off|
|$9e2| 1.b|FDC LEDCTRL/EJECTMASK setting|
|$9e6| 4.w|〃  drive status/disk exchange flag|
|$9ee|10.b|〃  command buffer|
|$9f8| 6.b|SASI command buffer|
|$9fe|16.b|〃   capacity flag(?)|
|$a0e| 1.w|Running IOCS call number(-1 if not running)|

===Printer===
^Address^Size^Description^
|$a10| 1.b|Printer abort flag|
|$a11| 1.b|〃	kanji mode flag (0:alhpanumeric !0:kanji)|
|$a12| 1.b|〃	1st byte of double-byte character|
|$a13| 1.b|Number of printed lines to date|
|$a14| 1.w|〃	  number of printed digits|
|$a16|98.b|Printer parameters|
|$a78| 1.b|Number of lines of 1 page - 1|
|$a79| 1.b|Number of digits of one line - 1|

===Soft keyboard/Mouse cursor===
^Address^Size^Description^
|$a7a| 1.l|Soft keyboard display plane start address (plane 3)|
|$a7e| 1.l|〃					(plane 2)|
|$a82| 1.w|VSYNC check flag when drawing mouse cursor (0:off !0:on)|
|$a84| 1.w|Minimum travel distance to consider as dragging - 1|
|$a86| 1.w|Animation speed of mouse cursor|
|$a88| 1.w|Unknown($0000)|
|$a8a| 1.w|Unknown($00f6)|
|$a8c| 1.w|Column at which the mouse cursor can be displayed starting position(0)|
|$a8e| 1.w|〃			  line start position(0)|
|$a90| 1.w|〃			  column end position(128)|
|$a92| 1.w|〃			  line end position(1008)|
|$a94| 1.w|Unknown(1024)|
|$a96| 1.w|Unknown(1008)|
|$a98| 1.w|Number of text bytes per line|
|$a9a| 1.w|Mouse cursor movement range (X minimum value)|
|$a9c| 1.w|〃		      (Y  minimum value)|
|$a9e| 1.w|〃		      (X maximum value)|
|$aa0| 1.w|〃		      (Y maximum value)|
|$aa2| 1.b|Mouse cursor display switch (0: Erase !0: Display)|
|$aa3| 1.b|Not used|
|$aa4| 7.l|Pointer to pattern data base (6+1 pieces)(?)|
|$ac0| 1.w|Mouse cursor animation display number|
|$ac2| 1.w|〃			     speed counter|
|$ac4| 1.w|Mouse cursor animation flag (-1: animate)|
|$ac6| 1.w|Mouse left button state (0: not pressed -1: pressed)|
|$ac8| 1.w|〃    right button〃|
|$aca| 1.w|Movement amount in mouse X direction|
|$acc| 1.w|〃    Ｙ direction〃|
|$ace| 1.w|Mouse cursor X coordinate|
|$ad0| 1.w|〃	      Y coordinate|
|$ad2| 1.w|〃	      X coordinate save buffer|
|$ad4| 1.w|〃	      Y coordinate〃|
|$ad6| 1.w|Hotspot X coordinate|
|$ad8| 1.w|〃	      Y coordinate|
|$ada| 1.w|Mouse cursor display start column|
|$adc| 1.w|〃		      line|
|$ade| 1.w|Mouse IOCS call processing flag (-1: in processing)|
|$ae4| 6.w|〃	    register temporary storage area|
|$af0|64.b|Text save buffer (plane 2)|
|$b30|64.b|〃		    (plane 3)|
|$b70|16.l|Pointer to mouse cursor pattern data|
|$bb0| 1.w|Soft keyboard X coordinate|
|$bb2| 1.w|〃		Y coordinate|
|$bb4| 1.w|Drag start X coordinate|
|$bb6| 1.w|〃		Y coordinate|
|$bb8| 1.w|Key code of the key pressed on the soft keyboard|
|$bba| 1.l|〃				    key data address|
|$bbe| 1.b|Mouse status at the last processing (button state)|
|$bbf| 1.b|Mouse receive data processing flag (bit 7=1: processing bit 0=1: Soft keyboard displayed)|
|$bc0| 1.b|Soft keyboard key input repeat counter|
|$bc1| 1.b|Soft keyboard control mode|
|$bc2| 1.b|Mouse cursor/soft keyboard display status|
|$bc3| 1.b|Soft keyboard key pressed flag (0: not pressed 1: pressed)|
|$bc4| 1.b|Soft keyboard processing flag (-1: processing)|
|$bc5| 1.b|Special key processing flag (bit 0~3: corresponding to trap #10~13)|

===On-screen calculator===
^Address^Size^Description^
|$bc6| 1.b|Calculator display flag (0: erase 1: display)|
|$bc7| 1.b|〃  radix (0: decimal 1: hexadecimal)|
|$bc8| 1.b|〃  addition, subtraction, multiplication, division (1:+ 2:- 3:* 4:/)|
|$bc9| 1.b|〃  decimal point flag (0: integer 1: decimal)|
|$bca| 1.w|〃  output counter|
|$bcc| 1.l|〃  output read pointer|
|$bd0|22.w|〃  output buffer|
|$bfc| 1.w|〃  X coordinate|
|$bfe| 1.w|〃  Y coordinate|
|$c00| 2.l|〃  stored numeric value (floating point)|
|$c08| 2.l|〃  calculation result (〃)|
|$c10| 2.l|〃  working  (〃)|
|$c18| 1.w|〃  number of input digits|
|$c1a| 1.b|〃  error flag (0: normal 1: error)|
|$c1b|16.b|〃  numeric string buffer|
|$c2b| 6.b|〃  base number 〃|
|$c31| 1.b|Unused|

===ADPCM===
^Address^Size^Description^
|$c32| 1.b|ADPCM playback/recording mode (bit 8=1: split transfer mode)|
|$c33| 1.b|〃    DMA transfer error status|
|$c34| 1.b|DMA channel 2 transfer mode|
|$c35| 1.b|〃		error status|

===Font Stuff===
^Address^Size^Description^
|$c36|16.b|6*12 buffer for font acquisition|
|$c46|72.b|Buffer for creating fonts|
|$c8e| 1.b|Unused|

===FDD Status===
^Address^Size^Description^
|$c8f| 1.b|FDD receive result flag|
|$c90| 8.b|FD0 receive buffer result status|
|$c98| 8.b|FD1 〃|
|$ca0| 8.b|FD2 〃|
|$ca8| 8.b|FD3 〃|

===Misc===
^Address^Size^Description^
|$cb0| 1.b|Unused|
|$cb1| 3.b|Mouse receive data (set after 3 bytes are ready|
|$cb4| 1.b|Number of SASI-HD|
|$cb5| 1.b|RS-232C Receive data mask (low bit becomes 1 by bit length(?))|

===Sysport===
^Address^Size^Description^
|$cb6| 1.b|System port MPU type(0:68000 1:68010 2:68020 3:68030 4:68040)|
|$cb7| 1.b|〃	       MPU clock (0:10 1:16 2:20 3:25 4:33 5:40 6:50 MHz unit)|
|$cb8| 1.b|ROM wait loop count (1ms time in dbra empty loop)|
|$cba| 1.b|RAM〃|

====IOCS Work List(ROM version 1.30)====
===Sysport===
^Address^Size^Description^
|$cbc|1.b|MPU type (0:68000 1:68010 2:68020 3:68030 4:68040 6:68060)|
|$cbd|1.b|FPU present (0:no 1:yes)|
|$cbe|1.b|MMU present (〃)|
|$cbf|1.b|Startup information (0:Power on -1:Reset -2:Hot start)|
|$cc0|1.b|SCSI transfer size|
|$cc1|1.b|Unused|
|$cc2|1.b|Main body ID conformance inspection flag (-1: checked)|
|$cc3|1.b|SCSI not connected flag (if bit for each ID is 1 it is unusable)|

===IOCS Disk Stuff?==
^Address^Size^Description^
|$cc4|1.l|IOCS _B_VERIFY Process address storage buffer|
|$cc8|2.l|Unknown|
|$cd0|1.l|IOCS _B_WRITE	〃|
|$cd4|1.l|IOCS _B_READ	〃|
|$cd8|3.l|Unknown|
|$ce4|1.l|IOCS _B_FORMAT	〃|

===Various===
^Address^Size^Description^
|$d00|1.l|FD extended PDA constant table address acquisition processing address|
|$d04|1.l|Extended FDD address of motor-on processing|
|$d08|1.w|Text scrolling method (0: raster copy -1: soft control)|
|$d0a|1.w|Smooth scroll mode (0: jump 4, 8, 16: smooth)|
|$d0c|1.w|Cursor flashing enable switch (0: blinking -1: displayed)|
|$d0e|1.w|〃	inverted start line x 4|
|$d10|2.b|〃	inversion pattern|
|$d12|1.l|BEEP sound processing address (valid when BEEP sound address is -1)|
|$d16|1.l|ESC processing address (%%^%%[[ system only, standard if 0)|
|$d1a|1.w|Graphics drawing mode (0: normal 1: inverted)|
|$d1c|1.w|_TXXLINE/_TXYLINE length decrease value|

===Others===

^Address^Size^Description^
|$cec|1.b|SCHDISK build-in flag (bit for each ID is already set to 1)|