Difference between revisions of "XXDP diagnostic package"
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'''XXDP''' refers both to instances of the collection of [[diagnostic]]s produced by [[Digital Equipment Corporation|DEC]] for the [[PDP-11]], and, more usually, the minimalist system later provided to load and run them. (The diagnostics themselves were actually developed under another [[operating system|OS]], such as [[RSX-11]]; XXDP was only used to run them.) | '''XXDP''' refers both to instances of the collection of [[diagnostic]]s produced by [[Digital Equipment Corporation|DEC]] for the [[PDP-11]], and, more usually, the minimalist system later provided to load and run them. (The diagnostics themselves were actually developed under another [[operating system|OS]], such as [[RSX-11]]; XXDP was only used to run them.) | ||
| − | PDP-11 diagnostics were originally distributed on [[paper tape]]; later, groups of them were amalgamated onto [[mass storage]] media such as [[RK05 disk drive|RK05]] and [[RL01/02 disk drive|RL0x]] [[disk pack]]s. These were given names such as "RKDP" ('RK Diagnostic Package'); typically, a particular system was delivered with an RKDP pack (say) which contained all the diagnostics appropriate to that particular machine. A simple monitor was created to allow the machine to be [[bootstrap|booted]] directly from that pack, and also to make it easy to run them; 'XXDP' was the obvious generalization which was not specific to any particular media. An XXDP pack would contain diagnostics for all the PDP-11 [[peripheral]]s and options; this could easily be mass produced, as PDP-11 production increased. | + | PDP-11 diagnostics were originally distributed on [[paper tape]]; later, groups of them were amalgamated onto [[mass storage]] media such as [[RK05 disk drive|RK05]] and [[RL01/02 disk drive|RL0x]] [[disk pack]]s. These were given names such as "RKDP" ('RK Diagnostic Package'); typically, a particular system was delivered with an RKDP pack (say) which contained all the diagnostics appropriate to that particular machine. A simple monitor was created to allow the machine to be [[bootstrap|booted]] directly from that pack, and also to make it easy to run them; 'XXDP' was the obvious generalization which was not specific to any particular media. |
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| + | An XXDP pack would contain diagnostics for all the PDP-11 [[peripheral]]s and options; this could easily be mass produced, as PDP-11 production increased. The XXDP [[file system]] is that of [[DOS-11]]. | ||
==External links== | ==External links== | ||
Revision as of 00:31, 19 May 2022
XXDP refers both to instances of the collection of diagnostics produced by DEC for the PDP-11, and, more usually, the minimalist system later provided to load and run them. (The diagnostics themselves were actually developed under another OS, such as RSX-11; XXDP was only used to run them.)
PDP-11 diagnostics were originally distributed on paper tape; later, groups of them were amalgamated onto mass storage media such as RK05 and RL0x disk packs. These were given names such as "RKDP" ('RK Diagnostic Package'); typically, a particular system was delivered with an RKDP pack (say) which contained all the diagnostics appropriate to that particular machine. A simple monitor was created to allow the machine to be booted directly from that pack, and also to make it easy to run them; 'XXDP' was the obvious generalization which was not specific to any particular media.
An XXDP pack would contain diagnostics for all the PDP-11 peripherals and options; this could easily be mass produced, as PDP-11 production increased. The XXDP file system is that of DOS-11.
