Editing Apple IIc Plus

{{Infobox computer
| name                              = Apple IIc Plus
| image                             = [[File:Apple IIc Plus (front).jpg|250px]]
| caption                 = Apple IIc Plus
| manufacturer                      = Apple Computer, Inc.
| type                              = Home computer
| release date                      = September 1988
| discontinued                      = November 1990
| 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                                = Apple DOS 3.3, ProDOS, Apple Pascal
| predecessor                       = [[Apple IIc]]
| successor                         = [[Apple IIGS]]
| codename                          = Raisin
| model                             = 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 ==
<gallery mode="packed" heights="180">
File:Apple IIc Plus (front).jpg|Apple IIc Plus front view
File:Apple IIc Plus (side).jpg|Side view with Floppy Drive
File:Apple IIc Plus (back).jpg|Rear panel with I/O ports
File:IIc Plus motherboard.JPG|Internal logic board
</gallery>
[[Category:Apple Vintage Computers]]
{{Navbox-AppleVintage}}

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