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INTEL 8088

intel-8088

The Intel 8088 processor is derived from the 8086 processor using a simpler external 8-bit data bus. Like the 8086, the 8088 has 20 address lines making it able to address up to 1MB. The prefetch is slightly shorter 4 bytes and the prefect is slightly different to accommodate the 8-bit variant. The 6MHz 8088 …

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SPACE INVADERS

Space Invaders was released circa June 1978 by Midway. The game was developed by Taito. Space Invaders is a 2D action shooter. It was originally manufactured and sold by Taito in Japan, and was later licensed for production in the United States by the Midway division of Bally. Space Invaders became such a blockbuster that it …

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COMPUTER BULLETIN BOARD SYSTEM

hayes_300_baud_smartmodem_02

The Computer Bulletin Board System (BBS) got its start back in 1978 when a brutal snow storm paralyzed the city of Chicago. It was developed by Ward Christianson and Randy Suess. The system came into existence largely through a fortuitous combination of Christensen having a spare S-100 bus computer and an early Hayes internal modem, …

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XMODEM

hayes_300_baud_smartmodem_02

XMODEM is a protocol to transfer files from one machine to another. It originally was published by Ward Christensen on October 10, 1977. This program is sometimes called MODEM or MODEM2. The program is written in Z80 Assembler. The code runs as a module on CP/M based machines. This code was revised after a …

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ATARI 2600

The Atari 2600 was released on September 11, 1977 by Atari. The 2600 is a second generation game console that typically came with a pair of joysticks and maybe a game pad depending on the year purchased. Aftermarket joysticks and pads were available. Unlike first generation machines that were generally hard coded logic, The machine launched …

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INTEL 8048

intel-8048

The Intel 8048 is a CPU designed for embedded afflictions.  Over time, Intel has designed newer versions for other applications. The Intel 8048 was first introduced in the fall of 1976. The successive 8049 is plug compatible with the 8048 offering twice the data and memory. The CPU comes with 1KB of ROM space and 64 …

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BREAKOUT

Breakout was released circa April 1976 by Atari who also developed the game. Breakout is an action game. Steve Jobs and Steve Wozniak both worked designing this game.. In the game, a layer of bricks lines the top third of the screen. A ball travels across the screen, bouncing off the top and side walls of …

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EARLY CABINET TYPE ARCADE GAMES

Back in the 1970s before the PC came to the market. Games were built in dedicated cabinets for the coin-op arcade. Many games earned more than 1 billion quarters. By 1981, arcade video games were an $8 billion industry. Pong (1972) Gotcha (1973) Breakout (1976) Space Invaders (1978) Asteroids (1979)

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ZILOG Z80 CPU

The Zilog Z80 microprocessor was released circa March 1976. The CPU replaces the earlier Intel 8008 processor, The Z80 was a renegade processor when some engineers left Intel to form their own company. The Z80 is a clone of the Intel C8080A with some extensions. Zilog added some more registers and they also made the CPU much …

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FLOPPY DISKS

Floppy disks

The original DA400 provided only 80.6K when formatted with 128 byte sectors and 89.6K when formatted with 256 byte sectors. The Tandon floppy disk on the PC used 256 byte sectors and it held 160K on each side of the diskette. The PC diskette is termed double density as it is double the capacity of …

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