Editing PEEK and POKE (section)

=={{anchor|DPEEK|DPOKE|DEEK|DOKE}}16 and 32-bit versions==
As most early [[home computer]]s used 8-bit processors, PEEK or POKE values are between 0 and 255. Setting or reading a 16-bit value on such machines requires two commands, such as {{code|2=basic|PEEK(A)+256*PEEK(A+1)}} to read a [[Endianness|little-endian]] 16-bit integer at address A, and {{code|2=basic|POKE A,V}} followed by {{code|2=basic|POKE A+1,V/256}} to store a 16-bit integer V at address A.

Some BASICs, even on 8-bit machines, have commands for reading and writing 16-bit values from memory. [[BASIC XL]] for the [[Atari 8-bit computers]] uses a "D" (for "double") prefix: <code>DPEEK</code> and <code>DPOKE</code>. The East-German "Kleincomputer" KC85/1 and KC87 calls them <code>DEEK</code> and <code>DOKE</code>.<ref name="Kühnel_1987_Kleincomputer">{{cite book |editor-first1=Rainer |editor-last1=Erlekampf |editor-first2=Hans-Joachim |editor-last2=Mönk |author-first=Claus |author-last=Kühnel |pages=218, 232, 236 |title=Mikroelektronik in der Amateurpraxis |trans-title=Micro-electronics for the practical amateur |chapter=4. Kleincomputer - Eigenschaften und Möglichkeiten |trans-chapter=4. Microcomputer - Properties and possibilities |publisher={{ill|Militärverlag der Deutschen Demokratischen Republik|de}}, Leipzig |location=Berlin |date=1987 |orig-year=1986 |edition=1 |volume=3 |language=de |isbn=3-327-00357-2 |id=7469332}}</ref>

The [[Sinclair QL]] has <code>PEEK_W</code> and <code>POKE_W</code> for 16-bit values and <code>PEEK_L</code> and <code>POKE_L</code> for 32-bit values. [[ST BASIC]] for the Atari ST uses the traditional names but allows defining 8/16/32 bit memory segments and addresses that determine the size.

A Linux command line <code>peekpoke</code> <ref>peekpoke https://github.com/apritzel/peekpoke</ref> utility has been developed mainly for ARM based single board computers. <code>peekpoke</code> is a Linux command line tool to read from and write to system memory. Its main use is to talk to hardware peripherals from userland: to read or manipulate state, and to dump registers.