PEEK
The command in most microcomputer BASICs f OR reading mem ORy contents (a byte) at an absolute address. POKE is the c ORresponding command to write a value to an absolute address. This is often extended to mean the c ORresponding constructs in any High Level Language. Much hacking on small microcomputers without MMUs consists of "peek"ing around mem ORy, m ORe OR less at random, to find the location where the system keeps interesting stuff. Long (and variably accurate) lists of such addresses f OR various computers circulate (see interrupt list). The results of "poke"s at these addresses may be highly useful, mildly amusing, useless but neat, OR total lossage (see {killer poke}). Since a real operating system provides useful, higher-level services f OR the tasks commonly perf ORmed with peeks and pokes on micros, and real languages tend not to encourage low-level mem ORy groveling, a question like "How do I do a peek in C?" is diagnostic of the newbie. Of course, operating system kernels often have to do exactly this a real C hacker would unhesitatingly, if unp ORtably, assign an absolute address to a pointer variable and indirect through it. [ Jargon File] (1995-01-31) In addition suitable contents: [ = ] [ ad ] [ address ] [ ag ] [ al ] [ am ] [ an ] [ ar ] [ arc ] [ arg ] [ AS ] [ as ] [ ASIC ] [ at ] [ av ] [ B ] [ b ] [ be ] [ bi ] [ bs ] [ by ] [ byte ] [ C ] [ ca ] [ cat ] [ cc ] [ ch ] [ ci ] [ ck ] [ co ] [ com ] [ comma ] [ command ] [ computer ] [ con ] [ cons ] [ cr ] [ cu ] [ dd ] [ de ] [ ding ] [ do ] [ du ] [ E ] [ ec ] [ ed ] [ ee ] [ er ] [ era ] [ es ] [ extend ] [ fi ] [ file ] [ fo ] [ fOR ] [ ge ] [ gh ] [ gl ] [ gn ] [ gr ] [ grovel ] [ gu ] [ h ] [ hack ] [ hacker ] [ hr ] [ IC ] [ id ] [ ie ] [ il ] [ in ] [ inc ] [ int ] [ interesting ] [ interrupt ] [ interrupt list ] [ io ] [ ir ] [ is ] [ it ] [ J ] [ Jargon File ] [ K ] [ ke ] [ kernel ] [ ki ] [ killer poke ] [ la ] [ language ] [ ld ] [ Lex ] [ li ] [ list ] [ lists ] [ location ] [ loss ] [ lossage ] [ lt ] [ lu ] [ ly ] [ M ] [ ma ] [ mall ] [ man ] [ memORy ] [ micro ] [ microcomputer ] [ mil ] [ mm ] [ MMU ] [ mo ] [ mod ] [ module ] [ mp ] [ Mu ] [ mu ] [ na ] [ nc ] [ ne ] [ newbie ] [ ng ] [ nl ] [ no ] [ np ] [ ns ] [ O ] [ om ] [ op ] [ operating system ] [ pe ] [ perf ] [ ph ] [ point ] [ pointer ] [ poke ] [ pORt ] [ pr ] [ pt ] [ query ] [ ques ] [ random ] [ rc ] [ re ] [ real ] [ real operating system ] [ ro ] [ ru ] [ S ] [ sa ] [ se ] [ service ] [ SI ] [ si ] [ sig ] [ sit ] [ sk ] [ sm ] [ so ] [ st ] [ struct ] [ su ] [ sy ] [ system ] [ T ] [ th ] [ to ] [ tr ] [ ua ] [ ug ] [ up ] [ us ] [ va ] [ value ] [ var ] [ variable ] [ ve ] [ vi ] [ wb ] [ write ] [ yt ]
[ Go Back ]
Free On-line Dictionary of Computing Copyright © by OnlineWoerterBuecher.de - (6540 Reads) |