Processor: 2.8 MHz (user switchable to 1 MHz) 65C816
ROM: 256K ROM version 3
RAM:
1 MB onboard
1 RAM expansion slot
RAM expansion up to 8 MB possible (IIgs pictured on this page has a 2 MB RAM card installed)
Graphics:
Super-high-resolution:
320 x 200, in up to 16 colors per line and 256 colors per screen, from a palette of 4,096 color
640 x 200, in 4 or more colors per line and up to 128 colors per screen, from a palette of 4,096 colors
Double-high-resolution:
560 x 192, 16 colors
Double-low-resolution:
80 x 48, 6 colors
High-resolution:
280 x 192, 6 colors
Low-resolution:
40 x 48, 16 colors
Note:
The Apple IIgs supported all graphics modes of previous Apple II models and introduced several new ones through a custom Video Graphics Chip (VGC), all of which used a 12-bit palette for a total of 4096 possible colors, though not all 4096 colors could appear onscreen at the same time. The IIgs is officially compatible with the 12" (11.5" viewable) Apple RGB Monitor A2M6014. Other RGB monitors will work but they must support the IIgs analog signal. There were several third party monitors that were compatible with the IIgs, but all of them required a custom cable and ranged in size from 12" to 15". Compatible monitors have a fairly low horizontal sync rate - 15.75KHz.
Sound:
Ensoniq 32-oscillator digital synthesizer chip with dedicated 64K RAM
Produces up to 15 voices
Uses internal speaker, or external speaker or headphones via audio output jack (volume is set by software through Control Panel)
Storage:
Compatible Apple External Drives:
Disk IIc 5.25-inch floppy drive (A2M4050)
UniDisk 5.25-inch floppy drive (A9M0104)
Apple 5.25-inch floppy drive (A9M0107)
UniDisk 3.5-inch floppy drive (A2M2053)
Apple 3.5-inch floppy drive (A9M0106)
Note:
SCSI drives require an expansion card. The IIgs pictured on this page has an Apple II High-Speed SCSI Card (820-0153-A, 1990) installed. It boots GS/OS from a 100 MB Zip drive.
Built-in Internal Drive:
None
Expansion Slots:
7 Apple II Proprietary Slots
Ports:
Serial Printer port (mini DIN-8) - AppleTalk supported
Serial Modem port (mini DIN-8) - AppleTalk supported
DB-9 Game port (joystick, paddles)
DB-19 Disk drive port (5.25" or 800K - see list above of compatible Apple drives)
DB-15 Analog RGB monitor
Composite video out (RCA connector)
NTSC composite video output (RCA connector)
Internal game connector (onboard)
Apple Desktop Bus (ADB) port (mini DIN-4)
Headphone jack (1⁄8-inch mono phono jack)
Apple II High-Speed SCSI Card
Apple IIgs Ports
Operating System:
Compatible Operating Systems:
GS/OS
GS/OS Screen Captures Using PNG Floyd CDA:
Screen Capture 1
Screen Capture 2
Screen Capture 3
ProDOS 8
ProDOS 16
Pascal
DOS 3.3
CP/M (with appropriate coprocessor card)
Languages in ROM:
Applesoft BASIC
Keyboard and Mouse:
Keyboard:
All Macintosh ADB keyboards will work
IIgs shipped with its own specially designed keyboard
80 keys, plus 14-key numeric keypad
Two Apple Desktop Bus (ADB) connectors (one for attaching the keyboard to the computer; one for daisy-chaining additional input devices)
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