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BIOS POST card for ISA bus BIOS POST card for PCI bus Professional BIOS POST card for PCI bus Two POST seven-segment displays integrated on a computer motherboard. The original IBM BIOS made POST diagnostic information available by outputting a number to I/O port 0x80 (a screen display was not possible with some failure modes). Both progress ...
The Mac Plus has 128 KB of ROM on the motherboard, which is double the amount of ROM in previous Macs; the ROMs included software to support SCSI, the then-new 800 KB floppy drive, and the Hierarchical File System (HFS), which uses a true directory structure on disks (as opposed to the earlier MFS, Macintosh File System in which all files were ...
If they are hot swapped, the devices must be similar enough that the driver running on the host system recognizes and can be used with the new device. Otherwise, the new device will not function properly. While this is seldom an issue with standard keyboard devices, the host system rarely recognizes the new device attached to the PS/2 mouse port.
An Apple IIc with the Apple Flat Panel Display attached. At the time of the Apple IIc's release, Apple announced an optional black and white (1-bit) LCD screen designed specifically for the machine called the Apple Flat Panel Display. While it was welcomed as a means of making the IIc more portable, it did not integrate well as a portable ...
A Motorola StarMax 3000/160MT. The Motorola StarMax was a line of licensed Macintosh clones produced by Motorola Information Systems Group in 1996 and 1997. They used versions of Apple's Tanzania motherboard, which was designed to use standard IBM PC compatible components in addition to Apple-proprietary components then in common use in the Power Macintosh family.
Two POST seven-segment displays ("Q_CODE1" and "Q_CODE2", lower-left), integrated on a computer motherboard. Diagnostic cards are today mainly used by designers of motherboards and extension cards, along with logic analyzers and other debug tools and interfaces. They are less commonly used in the 21st century for computer repair and by system ...
On older personal computer motherboards, the southbridge is one of the two chips in the core logic chipset, handling many of a computer's input/output functions. The other component of the chipset is the northbridge, which generally handles high speed onboard communications.
The IBM PC's popularity and Apple's decision to compete with itself through the lower-priced Macintosh also hindered Lisa's acceptance. In 1981, after Steve Jobs was forced out of the Lisa project by Apple's board of directors, [ 6 ] he appropriated the Macintosh project from Jef Raskin , who had conceived it as a sub- $1,000 (equivalent to ...