Categorical Listing
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Math routines
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DNegate $C172 Negate a 16 bit integer 1-001
Ddiv $C169 Unsigned 16 bit division 1-002
DMult $C166 Unsigned 16 bit by 16 bit multiply 1-003
BMult $C163 Unsigned 16 bit by 8 bit multiply 1-004
BBMult $C160 Unsigned 8 bit by 8 bit multiply 1-005
DSdiv $C16C Signed 16 bit division 1-006
Dabs $C16F 16 bit absolute value 1-007
Ddec $C175 Decrement a 16 bit integer 1-008
DShiftLeft $C15D Multiple 16 bit arithmetic shift
left 1-009
DShiftRight $C262 Multiple 16 bit logical shift right 1-010
CRC $C20E Compute the checksum of a memory
region 1-011
Memory manipulation
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InitRam $C181 Multiple memory location
initialization 1-101
MoveData $C17E Intelligent memory block move 1-102
i_MoveData $C1B7 Intelligent memory block move with
inline data 1-103
FillRam $C17B Memory block fill 1-104
i_FillRam $C1B4 Memory block fill with inline data 1-105
ClearRam $C178 Fill a memory region with zeroes 1-106
CmpString $C26B String compare 1-107
CopyString $C265 String copy 1-108
CmpFString $C26E Memory block comparison 1-109
CopyFString $C268 Memory block move 1-110
Text and fonts
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PutChar $C145 Display a character 1-201
SmallPutChar $C202 Draw a character on the screen 1-202
PutDecimal $C184 Display a 16 bit integer 1-203
PutString $C148 Display a text string 1-204
i_PutString $C1AE Display a text string with inline
data 1-205
GetNextChar $C2A7 Read a character from the keyboard 1-206
GetString $C1BA Read a line of text from the user 1-207
InitTextPrompt $C1C0 Create the text cursor sprite 1-208
PromptOn $C29B Turn on the text cursor 1-209
PromptOff $C29E Turn off the text cursor 1-210
UseSystemFont $C14B Select the BSW font 1-211
LoadCharSet $C1CC Make a memory resident font the
current font 1-212
GetRealSize $C1B1 Get a character's stats 1-213
GetCharWidth $C1C9 Get a character's width 1-214
Low level disk routines
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SetDevice $C2B0 Select a drive 1-301
ChangeDiskDevice $C2BC Change disk drive device number 1-302
OpenDisk $C2A1 Open a disk 1-303
NewDisk $C1E1 Initialize a drive 1-304
EnterTurbo $C214 Setup a drive with turbodos 1-305
ExitTurbo $C232 Stop turbodos in a drive 1-306
PurgeTurbo $C235 Stop and remove turbodos in a drive 1-307
GetDirHead $C247 Read track 18 sector 0 1-308
PutDirHead $C24A Write to track 18 sector 0 1-309
GetBlock $C1E4 Read a sector 1-310
PutBlock $C1E7 Write a sector 1-311
ReadBlock $C21A Read a sector with drive preset 1-312
WriteBlock $C220 Write a sector with drive preset 1-313
VerWriteBlock $C223 Verify before writing sector 1-314
GetPtrCurDkNm $C298 Compute address of disk's name 1-315
FindBAMBit $C2AD Check if a disk sector is in use 1-316
SetNextFree $C292 Find and allocate a disk block 1-317
BlkAlloc $C1FC Allocate sectors for a file 1-318
NxtBlkAlloc $C24D Allocate sectors for a file 1-319
SetGEOSDisk $C1EA Convert a disk to GEOS format 1-320
ChkDkGEOS $C1DE Check if a disk is GEOS format 1-321
CalcBlksFree $C1DB Compute number of free blocks on
disk 1-322
FreeBlock $C2B9 Free a BAM bit in memory 1-323
High level disk routines
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FindFTypes $C23B Create a table of file names 1-401
FindFile $C20B Lookup a file in the directory 1-402
SaveFile $C1ED Save memory to a file 1-403
WriteFile $C1F9 Save memory to preallocated sectors 1-404
RenameFile $C259 Rename a file 1-405
DeleteFile $C238 Delete a file 1-406
FastDelFile $C244 Delete a temporary file 1-407
FreeFile $C226 Free a file's sectors 1-408
RstrAppl $C23E Load the SWAPFILE 1-409
GetFile $C208 Load a file, given a file name 1-410
LdFile $C211 Load a file, given a directory entry 1-411
LdApplic $C21D Load and run a file, given a
directory entry 1-412
LdDeskAcc $C217 Load a file with memory swapping 1-413
ReadByte $C2B6 Get a byte from a file 1-414
ReadFile $C1FF Load a chain into memory, given the
initial track and sector 1-415
GetFreeDirBlk $C1F6 Find a hole in the directory 1-416
SetGDirEntry $C1F0 Create a directory entry on disk 1-417
BldGDirEntry $C1F3 Create a directory entry in memory 1-418
GetFHdrInfo $C229 Get a file's load address 1-419
FollowChain $C205 Create a list of sectors used by a
file 1-420
VLIR support routines
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OpenRecordFile $C274 Open a VLIR file 1-501
PointRecord $C280 Goto a specific VLIR chain 1-502
PreviousRecord $C27D Move to previous VLIR chain 1-503
NextRecord $C27A Move to next VLIR chain 1-504
InsertRecord $C286 Insert a VLIR chain 1-505
AppendRecord $C289 Add a VLIR chain 1-506
DeleteRecord $C283 Remove a VLIR chain 1-507
ReadRecord $C28C Load a VLIR chain 1-508
WriteRecord $C28F Save memory to a VLIR chain 1-509
UpdateRecordFile $C295 Update a VLIR file 1-510
CloseRecordFile $C277 Close a VLIR file 1-511
Graphics
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GraphicsString $C136 Process a graphic command table 1-601
i_GraphicsString $C1A8 Process a graphic command table with
inline data 1-602
SetPattern $C139 Select a fill pattern 1-603
FrameRectangle $C127 Draw an outline in a pattern 1-604
i_FrameRectangle $C1A2 Draw a solid outline with inline
data 1-605
Rectangle $C124 Fill a box with a pattern 1-606
i_Rectangle $C19F Fill a box with a pattern with
inline data 1-607
RecoverRectangle $C12D Copy a box from screen 1 to screen 2 1-608
i_RecoverRectangle $C1A5 Copy a box from screen 1 to screen 2
with inline data 1-609
ImprintRectangle $C250 Copy a box from screen 2 to screen 1 1-610
i_ImprintRectangle $C253 Copy a box from screen 2 to screen 1
with inline data 1-611
InvertRectangle $C12A Reverse video a box 1-612
RecoverLine $C11E Copy a line from screen 2 to screen 1 1-613
InvertLine $C11B Reverse video a horizontal line 1-614
DrawLine $C130 Draw/Erase/Copy an arbitrary line 1-615
HorizontalLine $C118 Draw a horizontal line in a pattern 1-616
VerticalLine $C121 Draw a vertical line in a pattern 1-617
GetScanLine $C13C Compute memory address of a row on
the screen 1-618
TestPoint $C13F Test the value of a pixel 1-619
DrawPoint $C133 Draw/Erase/Copy a point on the
screen 1-620
BitmapUp $C1AB Draw a click box with inline data 1-621
i_BitmapUp $C1AB Draw a click box with inline data 1-622
BitmapClip $C2AA Draw a coded image 1-623
BitOtherClip $C2C5 Draw a coded image with user patches 1-624
DrawSprite $C1C6 Copy a sprite data block 1-625
PosSprite $C1CF Position a sprite 1-626
EnablSprite $C1D2 Turn on a sprite 1-627
DisablSprite $C1D5 Turn off a sprite 1-628
Controls
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DoMenu $C151 Menu processor 1-701
DoPreviousMenu $C190 Close current menu 1-702
GotoFirstMenu $C1BD Close all menu levels 1-703
ReDoMenu $C193 Draw the current menu 1-704
RecoverMenu $C154 Erase the current menu 1-705
RecoverAllMenus $C157 Erase all menus 1-706
DoIcons $C15A Draw a table of click boxes 1-707
DoDlgBox $C256 Window processor 1-708
RstrFrmDialogue $C2BF Close a window 1-709
IsMseInRegion $C2B3 Check if mouse is inside a window 1-710
Panic $C2C2 Report system error 1-711
Miscellaneous
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InitForIO $C25C Open serial communication 1-801
DoneWithIO $C25F Close serial communication 1-802
FirstInit $C271 Initialize GEOS variables 1-803
MainLoop $C1C3 GEOS's main loop 1-804
InterruptMain $C100 IRQ routine 1-805
BootGEOS $C000 Reboot GEOS 1-806
StartAppl $C22F Run a program that is in memory 1-807
EnterDesktop $C22C Load and run DESKTOP 1-808
ToBasic $C241 Restart BASIC 1-809
CallRoutine $C1D8 Perform an indirect jump 1-810
DoInlineReturn $C2A4 Perform a jump through a table 1-811
StartMouseMode $C14E Initialize the mouse 1-812
MouseUp $C18A Turn on the mouse 1-813
MouseOff $C18D Turn off the mouse 1-814
ClearMouseMode $C19C Reset the mouse 1-815
Sleep $C199 Set up a time delay 1-816
GetRandom $C187 Change the random number 1-817
GetSerialNumber $C196 Who knows what this routine does??? 1-818
Processes
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InitProcesses $C103 Initialize a table of recurring
timed events 1-901
EnableProcess $C109 Force a recurring timed event to run 1-902
RestartProcess $C106 Enable a recurring timed event 1-903
FreezeProcess $C112 Stop a recurring timed event's timer 1-904
BlockProcess $C10C Prevent a recurring timed event from
running 1-905
UnblockProcess $C10F Allow a recurring timed event to
execute 1-906
UnfreezeProcess $C115 Start a recurring timed event's
timer 1-907
REU Access
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StashRAM $C2C8
FetchRAM $C2CB
SwapRAM $C2CE
VerifyRAM $C2D1
DoRAMOp $C2D4