Apple IIGS Apple IIGS

Apple IIGS Datasheet

On September 15th, 1986, Apple introduced a new addition to their Apple II series – the Apple IIGS. This personal computer was designed, manufactured, and sold by Apple from 1987 to 1992, and it was a game changer for the industry.

The Apple IIGS was equipped with a powerful 2.8 MHz WDC 65C816 processor, 256 KB of RAM, and 128 KB of ROM. It also featured a built-in Custom Video Graphics Controller, making it a great option for graphics-intensive tasks. Additionally, users had the option to add an Apple 3.5, Apple 5.25, or UniDisk floppy disk drive for even more storage and flexibility.

At its launch, the Apple IIGS had a starting price of $999, which was considered a great value for the specs and features it offered. However, despite its popularity, the computer was discontinued on December 1, 1992.

Today, the Apple IIGS is 37 years old and still holds a special place in the hearts of many Apple fans and computer enthusiasts. It was a pioneer in its time and helped pave the way for the advancements in technology that we enjoy today.

Apple IIGS running Pro DOS 16
Source: 6502workshop.com – Apple IIGS running Pro DOS 16

Apple IIGS Details

IntroducedSeptember 15, 1986
DiscontinuedDecember 1, 1992
Order NumberA0012LL/A
Original Price$999
Weight8.72 Ibs.
3.955 KG
Dimensions4.6” H x 11.2” W x 13.7” D
11.69 cm H x 28.45 cm W x 34.80 cm D

Apple IIGS Tech Specs

ProcessorWDC 65C816
Processor Speed2.8 MHz
Number of Cores1
System Bus1 MHz


Built-in Memory256 KB (Revision 1-2)
1.125 MB (Revision 3)
Maximum Memory8.125 MB
Memory Slots1 – 44-pin Memory Expansion Card
Minimum SpeedUnknown
ROM128 KB (Revision 1-2)
256 KB (Revision 3)


Graphics CardCustom Video Graphics Controller (VGC)
Graphics MemoryUnknown
Display Connection1 – RCA for composite video output,
1 – DB-15
External Resolution320 × 200 (16 colors per line, 256 colors per screen)
640 × 200 (4 or more colors per line, 128 colors per screen)
560 × 192 (16 colors)
80 × 48 (6 colors)
280 x 192 (6 colors)
40 × 48 (16 colors)


Serial2 – RS-422
1 – DE-9
Floppy Port1 – DB-19
Game1 – internal 16-pin GAME I/O
1 – external DE-9
Audio InNone
Audio Out1 – 3.5-mm analog output jack
1 – Built-in speaker
Display1 – RCA for composite video output
1 – DB-15


Slots7 – 50-pin Apple II peripheral
MediaOptional Apple 3.5, Apple 5.25, or UniDisk floppy disk drive


Original OSApple ProDOS 16 or Apple GS/OS
FirmwareApplesoft BASIC


Backup Battery3.6 V lithium
Maximum Continuous Power60 W
Line Voltage107 – 132V AC

Further Reading and References

Disclaimer: The data presented in this article is under continuous development and has been manually collected from various sources based on their availability. The author of this article may revise this dataset as additional research is conducted and reviewed. Please note that the information is provided “as is” and “as available” without express or implied warranties. The author cannot be held responsible for any omissions, inaccuracies, or errors in the published information. Any warranties relating to this information are hereby disclaimed.

Last updated: April 9, 2023