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OS_Alm, alarm manipulation (OZ usage)
GN_Aab, allocate alarm block
GN_Alp, process an expired alarm
GN_Fab, free alarm block
GN_Gab, get first alarm block
GN_Lab, link an alarm block into the alarm chain
GN_Uab, unlink an alarm block from the alarm chain
Application
DC_Nam, Name current application
OS_Poll, poll for an application (OZ usage)
DC_Pol, poll for card usage (extended API in OZ 4.6 and newer)
OS_Ent, enter an application (OZ usage)
DC_Ent, enter new application (low level OZ usage)
OS_Exit, exit an application (OZ usage)
DC_Bye, exiting current application (OZ usage)
OS_Bye, exit application
OS_Stk, stack current process / application (OZ usage)
OS_Uash, Update application static handle in stacked process environment (OZ usage, OZ 4.6 and newer)
OS_Use, process card usage (OZ usage)
Arithmetic
GN_D16, 16bit unsigned division
GN_D24, 24bit unsigned division
GN_Gdn, convert an ASCII string to a binary number
GN_M16, 16bit unsigned multiplication
GN_M24, 24bit unsigned multiplication
GN_Pdn, write number as decimal ASCII string
FP_ Floating point arithmetic
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OS_Mgb, get old bank binding
OS_Mpb, set (put) new bank binding
OS_Fc, fast code (bank binding)
OZ_Mgb, get old bank binding (ultra fast routine in LOWRAM, OZ V4.1 and newer)
OZ_Mpb, set new bank binding (ultra fast routine in LOWRAM, OZ V4.1 and newer)
Characters
GN_Cls, classify a character
GN_Skc, skip character
GN_Skd, skip to delimiter
GN_Skt, skip to value
CLI
DC_Icl, invoke new CLI
DC_In, read from CLI
DC_Xin, examine CLI input
DC_Rbd, rebind streams in CLI layer
OS_Cli, CLI interface (OZ usage)
Close
GN_Cl, close file
OS_Cl, internal close (OZ usage)
GN_Flc, close filter
OS_Mcl, close (free) memory pool
GN_Wcl, close wildcard handler
Dates
GN_Gdt, convert ASCII to internal date
GN_Dei, convert zoned format date to internal format
GN_Die, convert internal format date to zoned format
GN_Gmd, get (read) machine date in internal format
GN_Ldm, Country localized date manipulation (OZ 4.5 and newer)
GN_Pdt, write internal date as ASCII string
GN_Pmd, put (set) machine date
Delay
OS_Dly, fixed time delay
DOR manipulation
OS_Dor, DOR interface
Executable and Linkable Format (ELF)
DC_Elf, ELF low level interface (OZ usage, OZ 5.0 and newer)
DC_Rte, return from ELF (OZ usage, OZ 5.0 and newer)
GN_Elf, enter ELF program (OZ 5.0 and newer)
Errors
GN_Err, display system error box
GN_Esp, return an extended pointer to a system error message
OS_Erc, get error context
OS_Erh, set error handler
OS_Esc, examine special condition
Extended addresses
OS_Bhl, copy bytes from extended address
GN_Cme, compare null-terminated strings, one local, one extended
GN_Rbe, read byte at extended address
GN_Wbe, write byte at extended address
OS_Bde, copy bytes to extended address
File and stream operations
GN_Opf, file or stream open
GN_Cl, close file
GN_Del, delete a file from memory
GN_Ren, rename file
OS_Cl, internal close (OZ usage)
OS_Del, file delete (OZ usage)
OS_Frm, file read miscellaneous
OS_Fwm, file write miscellaneous
OS_Gb, get byte from file (or device)
OS_Gbt, get byte from file (or device) with timeout
OS_Mv, move bytes between stream and memory
GN_Crc, get CRC–32 of open file (OZ V4.5 and newer)
OS_Op, internal open (OZ usage)
OS_Pb, write byte to file, device
OS_Pbt, write byte to file, device with timeout
OS_Ren, file rename (OZ usage)
Serial port stream operations
OS_Pb, write byte to serial port device (IX handle)
OS_Pbt, write byte to serial port device (IX handle), with timeout
OS_Gb, get byte from serial port device (IX handle)
OS_Gbt, get byte from serial port device (IX handle) with timeout
OS_Si, low level serial port interface
Filenames
GN_Esa, read & write to filename segments
GN_Fcm, produce compressed filename
GN_Fex, expand a filename
GN_Opw, open wildcard handler
GN_Pfs, parse filename segment
GN_Prs, parse filename
GN_Wcl, close wildcard handle
GN_Wfn, fetch next match for wildcard string (handle)
GN_Wsm, match filename segment to wildcard string
Filters
GN_Flo, open a filter
GN_Flc, close filter
GN_Flf, flush filter
GN_Flr, read from filter
GN_Flw, write character to filter
GN_Fpb, push back into filter
Handles
OS_Fn, handle functions (OZ usage, extended API in OZ 4.6 and newer)
OS_Gth, get tri-handle (OZ usage)
OS_Vth, verify tri-handle (OZ usage)
OS_Fth, free tri-handle (OZ usage)
Input
GN_Sip, system input line routine
OS_In, wait for character from standard input
OS_Kin, keyboard input (OZ usage, OZ 5.0 and newer)
OS_Pur, purge keyboard buffer
OS_Tin, read character from standard input, with timeout
OS_Xin, examine input
Integer conversion
GN_Gdn, convert an ASCII string to a binary number
GN_Pdn, write number as decimal ASCII string
Linked lists
GN_Xnx, index next entry in a linked list
GN_Xdl, delete an entry from a linked list
GN_Xin, insert an entry into a linked list
Mailboxes
OS_Sr, save & restore
Miscellaneous
OS_Ploz, Poll for running OZ
OS_Off, Switch machine off
OS_Blp, Bleep generation
OS_Sr, Page Wait
GN_Crc, get CRC–32 of ressource (OZ V4.5 and newer)
DC_Upd, Update Operating System (OZ 4.7 and newer)
Persistent Memory Cards
OS_Epr, File Card Interface (extended API in OZ V4.2)
OS_Fep, Flash Card Interface (OZ V4.2 and newer)
Memory
OS_Axm, allocate explicit memory (OZ 4.6 and newer)
OS_Axp, allocate explicit page (OZ 4.6 and newer)
OS_Bix, bind in extended address
OS_Box, restore bindings after OS_Bix OS_Fc, select fast code (fast bank switching)
OS_Fma, find memory for allocation (OZ 4.6 and newer)
OS_Fxm, free explicit memory (OZ 4.6 and newer)
OS_Mal, allocate memory (extended API in OZ 4.7 and newer)
OS_Mcl, close memory (free memory pool)
OS_Mfr, free (previously allocated block) memory
OS_Mop, open memory (allocate memory pool)
Integer conversion
GN_Gdn, convert an ASCII string to a binary number
GN_Pdn, write number as decimal ASCII stringCrc, get CRC–32 of local memory area (OZ V4.5 and newer)
Open
GN_Opf, open file, device
GN_Flo, open filter
GN_Opw, open wildcard handler
OS_Mop, open memory (pool)
Output
GN_Nln, send newline (CR/LF) to standard output (deprecated)
GN_Soe, write string at extended address to standard outputoutput (deprecated)
GN_Sop, write local string to standard output, local memoryoutput (deprecated)
OS_Bout, write string at extended or local address to standard output (fast block display, OZ V4.2 and newer)
OS_Hout, write a hexadecimal byte to std. output (OZ 4.5 and newer)
OS_Nln, send newline (CR/LF) to standard output (OZ 5.0 and newer)
OS_Out, write character to standard output
OS_Pout, write embedded string at PC to standard output (fast block display, OZ V4.2 and newer)
OS_Prt, output character to printer
OS_Sout, write local string to standard output (OZ 5.0 and newer)
Screen
OS_Map, high resolution graphics manipulation
OS_Sr, save & restore screen file
OS_Sci, low level screen hardware interface
OS_Nq, fetch low level window information
Settingssettings, System parameters
OS_Sp, set Panel and PrinterEd values
OS_Nq, read Panel and PrinterEd values
GN_Win, Generic Window create interface
Settings, System parameters
OS_Sp, set Panel and PrinterEd values
OS_Nq, read Panel and PrinterEd values (extended API in OZ 4.5 and newer)
Time
GN_Gmt, fetch machine time
GN_Gtm, convert an ASCII string to a time in internal format
GN_Msc, miscellaneous time operations
GN_Pmt, put (set) machine time
GN_Ptm, write internal time as ASCII string
GN_Sdo, send date and time to standard output
OS_Dly, delay a given period
Tokens
OS_Wrt, write token
OS_Wtb, write token base
OS_Wts, write tokenized string (OZ 5.0 and newer)
Wildcards
GN_Opw, open wildcard handler
GN_Wcl, close wildcard handle
GN_Wfn, fetch next match for wildcard string (handle)
GN_Wsm, match filename segment to wildcard string
Handles
OS_Gth, get tri-handle (OZ usage)
OS_Vth, verify tri-handle (OZ usage)
OS_Fth, free tri-handle (OZ usage)