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Coleco Adam
Computer Information
The Coleco Adam was a home computer and Coleco's follow-up to their
successful ColecoVision
video game console. Announced at Summer CES in June 1983, Coleco
executives predicted sales of 500 000 by Christmas that year. Due
to early production problems, only a small number of units shipped
that year, preventing Coleco from meeting their sales expectations
and from taking advantage of the video game market crash of 1983.
From the time it was introduced to the time it was shipped, the
Adam's price had also increased from US$575 to US$725.
The Adam's software library was quite large from the
beginning - being derived from and compatible with the ColecoVision's
software and accessories. The popular CP/M operating system was
also available for the Adam.
The Adam came complete with a 64K RAM computer, Digital
Data Pack cassette drive, letter-quality printer and software including
the Buck Rogers video game. In comparison to its competitors, the
IBM PC Jr sold for US$669 with no accessories and the Commodore
64 could be bought on its own for US$200, however, the cost of upgrading
your C64 package to include the accessories that came with the Coleco
Adam would have brought this price up to not much lower that the
Adam's price. Note that many computers of this day relied on being
connected to a television rather than a computer monitor for display.
The Adam's technology could also be bought as an add-on
for the ColecoVision (The Super Game Module - Expansion Module #3).
This was less expensive than the Adam computer itself and provided
ColecoVision owners with an upgrade for their system.
The Adam's quality keyboard, printer and competitive
sound and graphics capabilities earned the system some good reviews.
Its BASIC interpreter, SmartBASIC, was largely compatible with Applesoft
BASIC, thus allowing users to utilise the large number of type-in
programs found in books and magazines.
The SmartBASIC interpreter came on a Digital Data
Pack cassette, unlike other home computers which stored the BASIC
interpreter permanently in ROM. Instead, the Adam featured a built-in
word processor, SmartWriter, as well as the Elementary Operating
System (EOS) OS Kernel and the 8K OS-7 ColecoVision operating system.
While the Adam had many good points about it, there
were a few weaknesses to the system. Coleco had made the odd decision
to store the entire system's power supply in the printer, thus making
the system unusable if the printer broke down. Additionally, the
Digital Data Pack cassettes, while faster and of higher capacity
than normal cassettes, were unreliable. Coleco eventually shipped
a 160K 5¼ inch floppy drive for the system.
Due to these problems and the lack of initial sales
due to less-than-expected shipments of the system, the Adam nearly
drove Coleco to bankruptcy, making them drop the system in 1985.
Coleco Adam Technical Specifications
- Resolution: 256 x 192
- CPU: Zilog Z-80A 8-bit
- CPU Speed: 3.58 MHz
- Support Processors: 3 x Motorola 6801 processors @ 1MHz (memory
and I/O, tape and keyboard control)
- Video Speed: 10.7 MHz
- RAM: 64K (128K optional)
- Video RAM: 16K (8x4116)
- ROM: 32K
- Video Display Processor: Texas Instruments TMS9928A
- Sprites: 32
- Colours: 16
- Sound: Texas Instruments SN76489AN; 3 tone channels, 1 noise
- Expansion: 3 internal slots, 1 cartridge slot, AdamNet 62.5
kbps half-duplex serial bus
- Cartridge ROM: 8K/16K/24K/32K
- Disk Drives: 2 x 160K (optional)
- Digital Data Drives: 2 x 256K
- Modem: 300 Baud (optional)
- Printer: 120 wpm Daisy Wheel, 16K buffer
- Serial/Parallel Port (optional)
- Auto Dialler (optional)
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