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The Macintosh SE is a personal computer designed, manufactured and sold by Apple Computer, Inc. from March 1987^[1] to October 1990. It marked a significant improvement on the Macintosh Plus design and was introduced by Apple at the same time as the Macintosh II.

The SE retains the same Compact Macintosh form factor as the original Macintosh computer introduced three years earlier and uses the same design language used by the Macintosh II. An enhanced model, the SE/30 was introduced in January 1989; sales of the original SE continued. The Macintosh SE was updated in August 1989 to include a SuperDrive, with this updated version being called the 'Macintosh SE FDHD' and later the 'Macintosh SE SuperDrive'. The Macintosh SE was replaced with the Macintosh Classic, a very similar model which retained the same central processing unit and form factor, but at a lower price point.

• 1Overview

Overview[edit]

The Macintosh SE was introduced at the AppleWorld conference in Los Angeles on March 2, 1987. The 'SE' is an acronym for 'System Expansion'.^[2] Its notable new features, compared to its similar predecessor, the Macintosh Plus, were:

• First compact Macintosh with an internal drive bay for a hard disk (originally 20 MB or 40 MB) or a second floppy drive.
• First compact Macintosh that featured an expansion slot.
• First Macintosh to support the Apple Desktop Bus (ADB), previously only available on the Apple IIGS, for keyboard and mouse connections.
• Improved SCSI support with faster data throughput and a standard 50-pin internal SCSI connector.
• Better reliability and longer life expectancy (15 years of continuous use)^[3] due to the addition of a cooling fan.
• Upgraded video circuitry that results in a lower percentage of CPU time being spent drawing the screen. In practice this results in a 10-20 percent performance improvement.^[4]
• Additional fonts and kerning routines in the Toolbox ROM^[3]
• Disk First Aid is included on the system disk

The SE and Macintosh II were the first Apple computers since the Apple I to be sold without a keyboard. Instead the customer was offered the choice of the new ADB Apple Keyboard or the Apple Extended Keyboard.

Apple produced ten SEs with transparent cases as prototypes for promotional shots and employees. They are extremely rare and command a premium price for collectors.^[5]

Operating system[edit]

The Macintosh SE shipped with System 4.0 and Finder 5.4; this version is specific to this computer.^[6] (The Macintosh II, which was announced at the same time but shipped a month later, includes System 4.1 and Finder 5.5.) The README file included with the installation disks for the SE and II is the first place Apple ever used the term 'Macintosh System Software', and after 1998 these two versions were retroactively given the name 'Macintosh System Software 2.0.1'.^[7]

Hardware[edit]

Processor: Motorola 68000, 8 MHz, with an 8 MHz system bus and a 16-bit data path

Mac Se Manual Download

RAM: The SE came with 1 MB of RAM as standard, and is expandable to 4 MB. The logic board has four 30-pin SIMM slots; memory must be installed in pairs and must be 150 ns or faster.

Video: There is 256 KB of onboard video memory, enabling 512x384 monochrome resolution. The built-in screen has a lower resolution.

Storage: The SE can accommodate either one or two floppy drives, or a floppy drive and a hard drive. After-market brackets were designed to allow the SE to accommodate two floppy drives as well as a hard drive, however it was not a configuration supported by Apple. In addition an external floppy disk drive may also be connected, making the SE the only Macintosh besides the Macintosh Portable which could support three floppy drives, though its increased storage, RAM capacity and optional internal hard drive rendered the external drives less of a necessity than for its predecessors. Single-floppy SE models also featured a drive-access light in the spot where the second floppy drive would be. Hard-drive equipped models came with a 20 MB SCSI hard disk.

Battery: Soldered into the logic board is a 3.0 V 1/2AA lithium battery, which must be present in order for basic settings to persist between power cycles. Macintosh SE machines which have sat for a long time have experienced battery corrosion and leakage, resulting in a damaged case and logic board.

Expansion: A Processor Direct Slot on the logic board allows for expansion cards, such as accelerators, to be installed. The SE can be upgraded to 50 MHz and more than 5 MB with the MicroMac accelerators. In the past other accelerators were also available such as the Sonnet Allegro. Since installing a card required opening the computer's case and exposing the user to high voltages from the internal CRT, Apple recommended that only authorized Apple dealers install the cards; the case was sealed with then-uncommon Torx screws.

Upgrades: After Apple introduced the Macintosh SE/30 in January, 1989, a logic board upgrade was sold by Apple dealers as a high-cost upgrade for the SE, consisting of a new SE/30 motherboard, case front and internal chassis to accommodate the upgrade components.

Easter egg: The Macintosh SE ROM size increased from 64 KB in the original Mac to 256 KB, which allowed the development team to include an Easter Egg hidden in the ROMs. By jumping to address 0x41D89A or reading from the ROM chips it is possible to display the four images of the engineering team.^[8][9]

Models[edit]

Introduced March 2, 1987:

• Macintosh SE^[10]

Introduced August 1, 1989:

• Macintosh SE FDHD: Includes the new SuperDrive, a floppy disk drive that can handle 1.4 MB High Density (HD) floppy disks. FDHD is an acronym for 'Floppy Disk High Density'; later some Macintosh SE FDHDs were labeled Macintosh SE Superdrive, to conform to Apple's marketing change with respect to their new drive. High-density floppies would become the de facto standard on both the Macintosh and PC computers from then on. An upgrade kit was sold for the original Macintosh SE which included new ROM chips and a new disk controller chip, to replace the originals.^[11]
• Macintosh SE 1/20: The name of the Macintosh SE FDHD with a 20 MB HDD when sold in Europe.
• Macintosh SE 1/40: The name of the Macintosh SE FDHD with a 40 MB HDD when sold in Europe.

Timeline of compact Macintosh models

Mac Se Manual Instructions

See also[edit]

References[edit]

1. ^Joel West (March 2, 1987). 'Macintosh II and Macintosh SE announced'. Newsgroup: comp.sys.mac. Usenet:2790@sdcsvax.UCSD.EDU. Retrieved January 26, 2014.
2. ^Goodin, Sue; Wilson, Dave (April 1987). 'Programming the New Macs'. Vol. 3 no. 5. MacTech.
3. ^ ^ab'How the SE Really Differs'. MacWorld Magazine. May 1987. p. 116.
4. ^'Vectronic's Macintosh SE'.
5. ^'Transparent Macintosh SE'. Low End Mac. Retrieved February 8, 2007.
6. ^'Macintosh hardware releases'. earlymacintosh.org.
7. ^'Macintosh: System Software Version History'.
8. ^'Macintosh Plus Easter Egg - Image of Designers in ROM'. September 12, 1999. Retrieved January 26, 2014.
9. ^Trammell Hudson (August 21, 2012). 'Ghosts in the ROM'. NYC Resistor. Archived from the original on February 17, 2015. Retrieved January 26, 2014.
10. ^'Macintosh SE: Technical Specifications'. Apple.
11. ^'Macintosh SE FDHD: Technical Specifications'. Apple.

External links[edit]

• The Mac SE Support Pages Repair & upgrade advice.
• Mac SE Low End Mac

Additional Information

Macs Manual

The Macintosh SE/30 is a personal computer that was designed, manufactured and sold by Apple Computer, Inc. from 1989 until 1991. It was the fastest and most expandable of the original black-and-white compact Macintosh series.

The SE/30 is essentially a Macintosh IIx in the same case as the Macintosh SE, with a black-and-white monitor and a single PDS slot (rather than the NuBus slots of the IIx) which supported third-party accelerators, network cards, or a display adapter. Although officially only able to support 32 MB, the SE/30 could expand up to 128 MB of RAM (a ludicrous amount of RAM at the time), and included a 40 or 80 MB hard drive. It was also the first compact Mac to include a 1.44 MB high density floppy disk drive as standard (late versions of the SE had one, but earlier versions did not). In keeping with Apple's practice from the Apple II+ until the Power Macintosh G3 was announced, a logic board upgrade was available to convert a regular SE to a SE/30. The SE would then have exactly the same specs as an SE/30, with the difference only in the floppy drive if the SE had an 800 KB drive. The set included a new front bezel to replace the original SE bezel with that of an SE/30.

In the naming scheme used at that time, Apple typically indicated the presence of a 68030 processor by adding the letter 'x' to a model's name, but when the Macintosh SE was updated to the 68030, this posed an awkward problem, as Apple was not willing to name their new computer the 'Macintosh SEx'. Thus, 'SE/30' was the name chosen.