Apple IIc Plus: Difference between revisions
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The '''Apple IIc Plus''' is the final model in the Apple IIc line, introduced by Apple Computer, Inc. in September 1988. It featured a faster 4 MHz 65C02 CPU, an internal 3.5" floppy drive, and several architectural enhancements over its predecessor, the [[Apple IIc]]. | The '''Apple IIc Plus''' is the final model in the Apple IIc line, introduced by Apple Computer, Inc. in September 1988. It featured a faster 4 MHz 65C02 CPU, an internal 3.5" floppy drive, and several architectural enhancements over its predecessor, the [[Apple IIc]]. | ||
== | == Architecture and Processor == | ||
The IIc Plus is powered by a '''65C02''' microprocessor running at '''4 MHz''', a significant speed increase over the original IIc’s 1 MHz. The system uses a custom ASIC for memory and peripheral management, and retains the IIc’s all-in-one compact design with built-in keyboard and power supply. | The IIc Plus is powered by a '''65C02''' microprocessor running at '''4 MHz''', a significant speed increase over the original IIc’s 1 MHz. The system uses a custom ASIC for memory and peripheral management, and retains the IIc’s all-in-one compact design with built-in keyboard and power supply. | ||
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* '''System bus:''' 8-bit data, 16-bit address (64 KB addressable per bank) | * '''System bus:''' 8-bit data, 16-bit address (64 KB addressable per bank) | ||
== | == Memory and Storage == | ||
The IIc Plus shipped with '''128 KB RAM''' as standard, expandable up to '''1 MB''' via third-party memory cards. The system features a built-in '''3.5" double-sided 800 KB floppy disk drive''', replacing the earlier IIc’s 5.25" drive. An external 5.25" drive can still be attached for backward compatibility. | The IIc Plus shipped with '''128 KB RAM''' as standard, expandable up to '''1 MB''' via third-party memory cards. The system features a built-in '''3.5" double-sided 800 KB floppy disk drive''', replacing the earlier IIc’s 5.25" drive. An external 5.25" drive can still be attached for backward compatibility. | ||
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* '''External storage:''' Optional 5.25" floppy (140 KB), compatible with UniDisk 3.5 and external drives | * '''External storage:''' Optional 5.25" floppy (140 KB), compatible with UniDisk 3.5 and external drives | ||
== | == Display and Graphics == | ||
The IIc Plus supports the same video modes as earlier Apple II models, with both colour and monochrome output: | The IIc Plus supports the same video modes as earlier Apple II models, with both colour and monochrome output: | ||
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* '''Video output:''' Composite video (NTSC), RGB via third-party adapters | * '''Video output:''' Composite video (NTSC), RGB via third-party adapters | ||
== | == Sound Capabilities == | ||
Sound is generated via a simple 1-bit speaker, toggled directly by software, as in all Apple II models. No dedicated sound chip is present, but third-party sound cards are supported. | Sound is generated via a simple 1-bit speaker, toggled directly by software, as in all Apple II models. No dedicated sound chip is present, but third-party sound cards are supported. | ||
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* '''Expansion:''' Supports Apple II-compatible sound peripherals | * '''Expansion:''' Supports Apple II-compatible sound peripherals | ||
== | == Input/Output and Expansion == | ||
The IIc Plus maintains the IIc’s compact, closed-case design, but provides a range of built-in ports for peripherals and expansion: | The IIc Plus maintains the IIc’s compact, closed-case design, but provides a range of built-in ports for peripherals and expansion: | ||
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* '''Expansion:''' Internal memory expansion slot (up to 1 MB), no standard Apple II slots | * '''Expansion:''' Internal memory expansion slot (up to 1 MB), no standard Apple II slots | ||
== | == Gallery == | ||
<gallery mode="packed" heights="180"> | <gallery mode="packed" heights="180"> | ||
File:Apple IIc Plus (front).jpg|Apple IIc Plus front view | File:Apple IIc Plus (front).jpg|Apple IIc Plus front view | ||
Revision as of 14:09, 23 August 2025
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| Apple IIc Plus | |
| Specifications | |
|---|---|
| Manufacturer | Apple Computer, Inc. |
| Type | Home computer |
| Released | September 1988 |
| Discontinued | November 1990 |
| Intro price | US$675 (1988) |
| CPU | MOS Technology 65C02 @ 4 MHz |
| Memory | 128 KB RAM (expandable to 1 MB) |
| Storage | Internal 3.5" (800 KB) floppy disk drive, external 5.25" supported |
| Display | 40×24 or 80×24 text, 280×192 (colour), 560×192 (monochrome) graphics |
| Sound | 1-bit speaker (toggle), same as Apple II series |
| Dimensions | 30.5 cm × 29.2 cm × 7.6 cm |
| Weight | 3.6 kg |
| OS / Firmware | Apple DOS 3.3, ProDOS, Apple Pascal |
| Predecessor | Apple IIc |
| Successor | Apple IIGS |
| Codename | Raisin |
| Model no. | A2S4500 |
The Apple IIc Plus is the final model in the Apple IIc line, introduced by Apple Computer, Inc. in September 1988. It featured a faster 4 MHz 65C02 CPU, an internal 3.5" floppy drive, and several architectural enhancements over its predecessor, the Apple IIc.
Architecture and Processor
The IIc Plus is powered by a 65C02 microprocessor running at 4 MHz, a significant speed increase over the original IIc’s 1 MHz. The system uses a custom ASIC for memory and peripheral management, and retains the IIc’s all-in-one compact design with built-in keyboard and power supply.
Key architectural features:
- CPU: MOS Technology 65C02 @ 4 MHz (software switchable to 1 MHz for compatibility)
- ASIC: Custom Apple chip integrates memory, I/O, and timing functions
- ROM: 32 KB (with built-in firmware for ProDOS, AppleSoft BASIC, and utility routines)
- System bus: 8-bit data, 16-bit address (64 KB addressable per bank)
Memory and Storage
The IIc Plus shipped with 128 KB RAM as standard, expandable up to 1 MB via third-party memory cards. The system features a built-in 3.5" double-sided 800 KB floppy disk drive, replacing the earlier IIc’s 5.25" drive. An external 5.25" drive can still be attached for backward compatibility.
- RAM: 128 KB (expandable to 1 MB)
- ROM: 32 KB
- Internal storage: 3.5" Sony floppy (800 KB, GCR encoding)
- External storage: Optional 5.25" floppy (140 KB), compatible with UniDisk 3.5 and external drives
Display and Graphics
The IIc Plus supports the same video modes as earlier Apple II models, with both colour and monochrome output:
- Text: 40×24 or 80×24 characters (with 80-column card)
- Graphics:
- Low-res: 40×48 (16 colours)
- High-res: 280×192 (6 colours)
- Double hi-res: 560×192 (monochrome)
- Video output: Composite video (NTSC), RGB via third-party adapters
Sound Capabilities
Sound is generated via a simple 1-bit speaker, toggled directly by software, as in all Apple II models. No dedicated sound chip is present, but third-party sound cards are supported.
- Speaker: Internal, 1-bit digital (toggle)
- Expansion: Supports Apple II-compatible sound peripherals
Input/Output and Expansion
The IIc Plus maintains the IIc’s compact, closed-case design, but provides a range of built-in ports for peripherals and expansion:
- Serial ports: Two DIN-5 (modem and printer)
- Video: Composite video output (RCA), monochrome output (DIN-8)
- Disk port: For external 5.25" or 3.5" drives
- Joystick/mouse port: DE-9 connector
- Audio: Internal speaker only
- Keyboard: Integrated
- Expansion: Internal memory expansion slot (up to 1 MB), no standard Apple II slots
Gallery
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Apple IIc Plus front view -
Side view with Floppy Drive -
Rear panel with I/O ports -
Internal logic board
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