Color Manager
The Color Manager controls the task of translating an application's color
requests to a color capable of being displayed by the current hardware. It
keeps information about the display in a device record with information
concerning the type of search mechanism to be used for color matching and
inverting, as well as a handle to its pixel map.
The Color Manager sets up an initial color table for each GrafDevice with
default values, which correspond to the colors defined by the original
QuickDraw. Color Manager procedures can also manipulate individual colors
in a color table, so that an application can "fine tune" the mapping of
the program's color description to the color displayed on the screen
device.
Color QuickDraw
Color QuickDraw includes the same types of procedures and calls found in
"old" QuickDraw, but it has expanded to support color on the Macintosh II
in GrafPorts, pixel maps, icons, polygons, and cursors.
Color cursors and color icons are implemented through two new data
structures, CCrsr and CIcon. Each type of polygon has a new fill procedure
to permit color drawing. A typical definition is:
Procedure FillCRect(r: rect; ppat: PixPatHandle);
Script Manager
The Script Manager is used by TextEdit, or may be called by an
application directly, to provide the means for an application to be
written independently of the language (or script) in use.
The Script Manager provides a consistent interface to Roman and non-Roman
alphabets, those that use right-to-left and left-to-right progression, and
alphabets with other than the "standard" 26 Roman characters.
Start Manager
The Start Manager controls the bootup process on the Macintosh II. Once
power is supplied to the Macintosh II and control has been transferred to
the ROM, the Startup Manager determines which microprocessor is present,
initializes ROM Managers, and checks for initialization code within the
declaration ROM of all NuBus cards. The Start Manager then attempts to
locate an appropriate startup device, and executes its boot blocks.
Apple Desktop Bus Manager
The Apple Desktop Bus Manager controls those devices on the Apple Desktop
Bus (typically a keyboard and mouse). The ADB Manager supports calls to
and from ADB devices and supplies information about keys pressed, mouse
clicks, etc., to other managers.
Slot Manager
The Slot Manager in the Macintosh II provides the means for the on-board
ROM and logic to communicate with cards in the NuBus slots. The Slot
Manager interprets the information supplied by NuBus cards, and arbitrates
requests for bus mastership.
The Slot Manager checks each NuBus card's declaration ROM and sets up a
Slot Parameter Block data structure, which can be accessed by other Slot
Manager routines. Applications, or more likely, device drivers, may then
request the Slot Manager to read data of varying lengths from a card in a
NuBus slot.
Sound Manager
The Macintosh II Sound Manager replaces the 64K and 128K ROM Sound
Driver. All previous data structures, routines, and synthesizers are
supported in the Sound Manager, and new routines have been added to take
advantage of the new Apple Sound Chip on the Macintosh II logic board,
including four standard synthesizers:
-- Note synthesizer
-- Wave table synthesizer
-- M.I.D.I synthesizer
-- Sampled sound synthesizer
A programmer may expand upon these synthesizers by defining a synthesizer
or sound resource. The Sound Manager can call the new resources to play
existing channels, using the rules defined by the new synthesizer.
Deferred Task Manager
Because the Macintosh II supports interrupts through all six NuBus slots,
a manager is needed to handle the interrupts in an orderly fashion. The
Deferred Task Manager determines the appropriate time to service each of
the requested interrupts, depending on the level of interrupt requested
and other activity occurring within the Macintosh II.
Shutdown Manager
The Shutdown Manager is designed to provide a consistent way for the
Macintosh to be turned off or to be rebooted from the Finder as well as
from within an application. It allows the system to perform some
housekeeping prior to turning off or rebooting. Custom ShutDown procedures
may be installed and removed through routines available in the ShutDown
Manager.
Operating System Utilities
Routines in the Operating System Utilities provide the ability to switch
between 24-bit address mode, required for compatibility with existing
Macintosh applications, and 32-bit address mode allowing access to the
full 32-bit addressing capability of the MC68020 and NuBus slots.