Apple System Software (P-R)
This chapter lists selector codes of which the meaning is documented and the first character of the selector code is in the P-R range.
pccd (System? [7.5.3?])
gestaltCardServicesAttr &AD24 &AS26
Returns information about the PC Card Manager (for managing i.e.
PCMCIA cards).
enum {
#define gestaltCardServicesAttr 'pccd', /* Card Services attributes */
gestaltCardServicesPresent = 0, /* PC Card 2.0 (68K) API present */
gestaltPCCardFamilyPresent = 1, /* PC Card 3.x (PowerPC) API
present*/
gestaltPCCardHasPowerControl = 2, /* PCCardSetPowerLevel is
supported */
gestaltPCCardSupportsCardBus = 3, /* CardBus is supported */
/* constant names also listed, but believed to be obsolete */
gestaltPCCardDispatchExists = 0, /* if set, 68K support is present*/
gestaltCardServicesSupportsRequestIO = 1};
/* if set, CSRequest/ReleaseIO are
supported*/
NOTE:
This selector is not implemented with any current system software
(7.5.1) on the PowerBook 500 Series computers.
On a PowerBook 3400c/180 (with Mac OS 7.6) this selectors returns
0x02, so bit 1 isn't set!? (Rene Ros)
The two sources: PCMCIA API Manual (AD24) and the later PCCard.h header
file on Dev.CD Apr 97 SDK1; PC Card 3.0 SDK (AS26) each list different
constant names.
pclk (System [7.5.2]) INF?
gestaltProcClkSpeed &AS22
Returns the processor clock speed in Hz.
#define gestaltProcClkSpeed 'pclk'
NOTES:
Only on Power Macintosh, not on 68K computers?
On a PowerBook 5300c with System 7.5.2 this selector returns 99.9999 Mhz,
not 100. Small 'off-by-one' bug? (Rene Ros)
Some 604-based Power Computing models return the wrong value. This may
be because the ROM doesn't properly handle speeds above 200 MHz.
(Jean-Pierre Curcio and others)
A Power Macintosh 700 (PPC upgraded Quadra 700) using System 7.5.5
returns 5 MHz. The 'bclk' value is also incorrect.
A Centris 610 (System 7.1) returns 12672. (Daniel C. Kueng)
A Daystar Genesis MP (4x 604e at 200 MHz each) returns a value of
200 MHz. There is no sign of a selector which returns the number of
processors.
Mac OS in the Blue Box under Rhapsody returns a value for 80 MHz.
(Anonymous)
See also 'bclk' in this chapter.
pcxg (PC Exchange cp? [???])
(File Exchange cp? [???] part of Mac OS 8.5?)
gestaltPCXAttr &AS04/AS05
Returns information about PC Exchange.
enum {
#define gestaltPCXAttr 'pcxg' /* PC Exchange attributes */
gestaltPCXHas8and16BitFAT = 0, /* PC Exchange supports both 8 and
16 bit FATs */
gestaltPCXHasProDOS = 1, /* PC Exchange supports ProDOS */
gestalt??? = 2, /* with Mac OS 8.5 */
gestalt??? = 3}; /* with Mac OS 8.5 */
NOTE:
[This selector] isn't supported by all versions of PCExchange.
[...] to find out if MS-DOS (or ProDOS) disks can be mounted you can
use the File System Manager' GetFSInfo routine to determine what
FSM-based file systems are installed. (Jim Luther)
pgsz (System [6.0.4])
gestaltLogicalPageSize
Returns the logical page size in bytes.
#define gestaltLogicalPageSize 'pgsz' /* logical page size */
NOTE:
The value is unknown on 68000 machines, Gestalt will return an error.
pop! (System [7.0])
gestaltPopupAttr
Returns information about the pop-up control definition.
enum {
#define gestaltPopupAttr 'pop!' /* pop-up CDEF attributes */
gestaltPopupPresent = 0}; /* pop-up CDEF available */
powr (System [6.0.4])
gestaltPowerMgrAttr
Returns information about the Power Manager, if present.
enum {
#define gestaltPowerMgrAttr 'powr' /* Power Mgr attributes */
gestaltPMgrExists = 0, /* Power Mgr is present */
gestaltPMgrCPUIdle = 1, /* CPU can idle */
gestaltPMgrSCC = 2, /* can stop SCC clock */
gestaltPMgrSound = 3, /* can shut off sound circuits */
gestaltPMgrDispatchExists = 4, /* dispatch routines are present */
gestaltPMgrSupportsAVPowerStateAtSleepWake = 5}; /* &AS28 */
NOTE:
Bit 4 seen set on Power Macs (starting with System 7.5.2?)
This is because some desktop machines support the Power Manager for
things like Energy Star compliance. (Two anonymous contributors)
See also the 'pwrv' selector.
ppc (System [7.0])
gestaltPPCToolboxAttr
Returns information about the capabilities of the PPC Toolbox as
bit masks.
enum {
#define gestaltPPCToolboxAttr 'ppc ' /* PPC Toolbox attributes */
gestaltPPCToolboxPresent = 0x0000, /* Requires PPCInit to
be called */
gestaltPPCSupportsIncoming = 0x0001, /* Allow incoming net
requests */
gestaltPPCSupportsOutGoing = 0x0002, /* Allow outgoing net
requests */
gestaltPPCSupportsTCP_IP = 0x0004, /* supports TCP/IP */
gestaltPPCSupportsIncomingAppleTalk = 0x0010,
gestaltPPCSupportsIncomingTCP_IP = 0x0020,
gestaltPPCSupportsOutgoingAppleTalk = 0x0100,
gestaltPPCSupportsOutgoingTCP_IP = 0x0200
gestaltPPCSupportsRealTime = 0x1000}; /* Supports real-time
delivery */
NOTE:
The first thing that is confusing is that, unlike other selectors
returning attributes, the responses are not bit values, but bit masks.
This means you simply AND the value with the response to test the bit.
The second thing that is confusing is how to interpret
gestaltPPCToolboxPresent = 0x0000.
What this means is that if the PPC toolbox is present, but has not
been initialised (by calling PPCInit), then gestaltPPCToolboxAttr
returns 0x0000. In reality, PPCInit gets called by the Process
Manager before any applications get launched, so no applications will
actually see this response. (Dave Radcliffe)
proc (System [6.0.4])
gestaltProcessorType
Returns a value that indicates the type of processor that is
currently running (or emulated on Power Macs or under MAE).
enum {
#define gestaltProcessorType 'proc' /* processor type */
gestalt68000 = 1, /* MC68000 */
gestalt68010 = 2, /* MC68010 */
gestalt68020 = 3, /* MC68020 */
gestalt68030 = 4, /* MC68030 */
gestalt68040 = 5}; /* MC68040 &S01 */
NOTES:
The 68LC040 responds as type gestalt68040 but doesn't have a FPU. The
user can swap out the 68LC040 and put in a real 68040 with FPU, so
just checking the machineType or the processorType isn't enough.
(Dave Radcliffe)
Has there been a 68EC030 processor??? I assume it returns
gestalt68030 but doesn't have an MMU. (Rene Ros)
On a Power Macintosh the Gestalt function returns, although a 68LC040
is emulated, the value gestalt68020. This return value is intended to
highlight the two ways in which the 68LC040 Emulator more closely
resembles a 68020 processor than a 68040 processor. &AD11
prpv (PowerTalk ext [1.0?], part of PowerTalk)
gestaltSDPPromptVersion
Returns the SDP Prompt version as INTEGER. Returns zero if not
present and available.
#define gestaltSDPPromptVersion 'prpv' /* SDP Prompt version */
prty (System [6.0.4])
gestaltParityAttr
Returns information about the parity-checking abilities of the
machine.
enum {
#define gestaltParityAttr 'prty' /* parity attributes */
gestaltHasParityCapability = 0,
gestaltParityEnabled = 1};
pwky (System Update enbl [7.5 upd 2.0])
gestaltPowerKeyAddr?
Returns a pointer to a routine of type
typedef pascal OSErr (*PwrKeyProc)(short item, short action);
to enable/disable the PowerKey and/or Shutdown Alert.
#define gestaltPowerKeyAddr? 'pwky'
NOTE:
See TechNote 1017 (System 7.5 Update 2.0 / System 7.5.3) for more
detailed information.
pwrv (System? [???])
gestaltPowerMgrVers
Returns the Power Manager version as ???
#define gestaltPowerMgrVers 'pwrv'
NOTE:
See also the 'powr' selector.
qd (System [6.0.4])
gestaltQuickdrawVersion
Returns the version of QuickDraw currently present as 2-byte value.
enum {
#define gestaltQuickdrawVersion 'qd ' /* QuickDraw version */
gestaltOriginalQD = 0x0000,
gestaltOriginalQD1 = 0x0001,
gestalt8BitQD = 0x0100,
gestalt32BitQD = 0x0200,
gestalt32BitQD11 = 0x0210,
gestalt32BitQD12 = 0x0220,
gestalt32BitQD13 = 0x0230,
gestalt32BitQD135? = 0x0235, /* with System 7.1.2, ROM = 3072K? */
gestalt32BitQD139? = 0x0239, /* with System 7.5.1 on Power Macs
&AT12 */
gestalt32BitQD141? = 0x0241, /* with System 7.5.2 */
gestaltAllegroQD = 0x0250, /* Allegro QD OS 8.5, test versions? */
gestalt32BitQD251? = 0x0251}; /* with Mac OS 8.5 final */
======================================================================
Possible Combinations of ROM Versions and System Software Versions
======================================================================
ROM Class System Version Gestalt Value
----------------------------------------------------------------------
Black-and-white class < 7.0 gestaltOriginalQD
(ROM < 256K) >= 7.0 gestaltOriginalQD and
gestaltSystemVersion >= 0x0700
Color QD class < 7.0, no INITs gestalt8BitQD
(ROM = 256K) 6.0.3/6.0.4 and gestalt32BitQD
32-Bit QD INIT 1.0
6.0.5-6.0.8 and gestalt32BitQD12
32-Bit QD INIT 1.2
>= 7.0 gestalt32BitQD13
ci class 6.0.4 gestalt32BitQD + 1
(256K < ROM >= 3072K) 6.0.5-6.0.8 gestalt32BitQD12
>= 7.0 gestalt32BitQD13
SuperROM? 7.1.2-7.5? gestalt32BitQD135?
(ROM = 3072K) 7.5.1? gestalt32BitQD139?
7.5.2-8.0? gestalt32BitQD141?
8.5-9.0 gestalt32BitQD251?
----------------------------------------------------------------------
(Original source: D e v e l o p 14, June 1993, p. 56;
Info on System 7.1.2 and later based on observations and technical
notes.)
NOTE:
gestalt32BitQD11 is never returned and gestalt32BitQD + 1 means
0x0201 as response value and doesn't has a constant defined.
Another QuickDraw version is System 7 with a black-and-white class
machine.
Color QuickDraw is only available on 68020 and greater CPUs, and
this selector always returns gestaltOriginalQD on 68000 machines,
even when running System 7. &AT11
qdrw (System [7.0])
gestaltQuickDrawFeatures &S01
Returns information about QuickDraw.
enum {
#define gestaltQuickDrawFeatures 'qdrw' /* QuickDraw attributes */
#define gestaltQuickDrawFeaturesAttr 'qdrw' /* used in some headers */
gestaltHasColor = 0,
gestaltHasDeepGWorlds = 1,
gestaltHasDirectPixMaps = 2,
gestaltHasGrayishTextOr = 3,
gestaltSupportsMirroring = 4, /* &AD12 */
gestaltQDHasLongRowBytes = 5}; /* Long rowBytes supported in GWorlds*/
NOTES:
There is a bug in the 'qdrw' selector that causes it to report that
Color QuickDraw is always present, even on machines that don't support
it. Apple has acknowledged this bug on AppleLink. (Chris Wysocki)
Use SysEnvirons instead or test for the QD version ('qd ') being
8-bit QD or later.
qtim (QuickTime ext [1.0])
gestaltQuickTime
gestaltQuickTimeVersion
Returns QuickTime version as NumVersion.
#define gestaltQuickTime 'qtim' /* Movie Toolbox Availability */
#define gestaltQuickTimeVersion 'qtim' /* Movie Toolbox version */
NOTES:
The returned version is obtained from 'vers' resource ID# 1.
Initially the name 'gestaltQuickTime' was used to test for the
availability of QuickTime. The fact that is always returned a
version number was not documented until later. Then the name
'gestaltQuickTimeVersion' was defined. (Rene Ros)
See 'Reports' chapter (QuickTime section) for more information.
qtrs (QuickTime PowerPlug ext [1.0?])
gestaltQuickTimeFeatures &AS06
Returns information about QuickTime.
enum {
#define gestaltQuickTimeFeatures 'qtrs' /* QT Features attributes */
gestaltPPCQuickTimeLibPresent = 0}; /* PowerPC QT glue library is
present */
NOTE:
The gestaltPPCQuickTimeLibPresent bit indicates that the native
QuickTime interface library is available and can be called by native
PowerPC applications. (Dave Radcliffe)
See for more info Technical Note
'QT 01 - Inside Macintosh: QuickTime Addendum'.
qtsf (QuickTime ext [4.0])
gestaltQuickTimeStreamingFeatures
Returns information about QuickTime Streaming.
#define gestaltQuickTimeStreamingFeatures 'qtsf'
qtst (QuickTime? ext [4.0?])
gestaltQuickTimeStreamingVersion
Returns the version of QuickTime Streaming as BCD?
#define gestaltQuickTimeStreamingVersion 'qtst'
qtvr (QuickTime VR ext [2.0])
gestaltQTVRMgrAttr
Returns information about QuickTime VR.
enum {
#define gestaltQTVRMgrAttr 'qtvr' /* QuickTime VR attributes */
gestaltQTVRMgrPresent = 0, /* QTVR API is present */
gestaltQTVRObjMoviesPresent = 1, /* QTVR runtime knows about
object movies */
gestaltQTVRCylinderPanosPresent = 2}; /* QTVR runtime knows about
cylindrical panoramic
movies */
qtvv (QuickTime VR ext [2.0])
gestaltQTVRMgrVers
Returns the version of QuickTime VR as NumVersion.
#define gestaltQTVRMgrVers 'qtvv'
NOTE:
Versions before QuickTime VR 2.0 returned the version as BCD?
ram (System [6.0.4])
gestaltPhysicalRAMSize
Returns the number of bytes of the physical RAM currently installed.
#define gestaltPhysicalRAMSize 'ram ' /* physical RAM */
NOTE:
See also 'lram' and 'uram'.
rbv (System [6.0.4, discontinued?]) &AS04
gestaltRBVAddr
Returns the address of the RBV.
#define gestaltRBVAddr 'rbv ' /* RBV address */
reno (Apple Guide ext [1.2?], part of System 7.5 and later)
gestaltRenoAddr?
Returns a pointer to the Apple Guide globals. (Anonymous)
#define gestaltRenoAddr? 'reno'
NOTE:
Indicates presence "of the Reno system extension." (Reno is the
mechanism behind Apple Guide for managing the help data-bases?)
rmbg (System [7.5.2])
gestaltResourceMgrBugFixAttrs
Returns information to determine both the presence of the native
Resource Manager and the ordering of resources returned by the
GetIndType and Get1IndType. &AT13
enum {
#define gestaltResourceMgrBugFixAttrs 'rmbg'
#define kResourceBugFixesAttrs gestaltResourceMgrBugFixAttrs
gestaltRMForceSysHeapRolledIn = 0,
gestaltRMFakeAppleMenuItemsRolledIn = 1,
gestaltSanityCheckResourceFiles = 2, /* does sanity checking */
kGestaltRMTypeIndexOrderingUndefined = 3, /* ordering information
unavailable */
gestaltRMTypeIndexOrderingReverse = 8}; /* opposite order */
See also the gestaltResourceMgrAttr ('rsrc') selector.
rom (System [6.0.4]) INF
gestaltROMSize
Returns the size of the installed ROM in bytes.
#define gestaltROMSize 'rom ' /* ROM size */
NOTE:
On Power Macintosh computers this selector returns the ROM size minus
the 68K emulator portion, which uses about 1 MB. &AD18
romv (System [6.0.4]) INF
gestaltROMVersion
Returns the version number of the installed ROM.
#define gestaltROMVersion 'romv' /* ROM version */
rsrc (System [should work since 7.0?])
gestaltResourceMgrAttr
Returns information about the Resource Manager.
enum {
#define gestaltResourceMgrAttr 'rsrc' /* Resource Mgr attributes */
gestaltPartialRsrcs = 0,
gestaltResourceOverrides? = 1}; /* resource map overrides? */
NOTE:
Under System 7, bit 0 that tells if you have partial resource support
doesn't work right. The selector is undefined under System 7.0 and
7.0.1 even though the partial resource calls are available. This has
been acknowledged by Apple. (Michael Hecht, Quinn)
See also the gestaltResourceMgrBugFixAttrs ('rmbg') selector.
rtmr (System? [7.1.1?])
gestaltRealtimeMgrAttr
Returns information about the Realtime Manager.
enum {
#define gestaltRealtimeMgrAttr 'rtmr' /* Realtime Mgr attributes */
gestaltRealtimeMgrPresent = 0}; /* Realtime Mgr is present */
NOTE:
If the RealTime Mgr is present this means the ARTA routines are
available to determine if and how many DSPs are installed.
(Zalman Stern)
