This is a IBM PC Compatible Microswitch Keyboard from 80 years with AT/XT switch.
Autopsy:
Amstrad Monitor PC-CD / Mouse / Keyboard and System Discs
from Wikipedia:
The Amstrad PC1512 was Amstrad’s mostly IBM PC-compatible home computer system, first manufactured in 1986. It was later succeeded by the PC1640.
It launched for £499 and sold very well, as it was one of the first cheap PCs in Europe. It significantly helped open up the European PC market to consumers as well as businesses, and Amstrad’s advertising of the PC1512 was aimed at homes rather than offices. The 1512′s influence was such that the UK PC magazine PC Plus originally targeted itself at the “Amstrad PC 1512 and compatibles”, since home ownership of other PCs at the time was rare.
The PC1512 shipped with 512K of RAM; it could be upgraded to 640K of RAM with an expansion pack. Video output was compatible with the CGA standard, with an extension allowing all 16 colours to be used in the 640×200 graphics mode. The CPU of both the PC1512 and the later PC1640 was an 8 MHz Intel 8086, which was sufficient for playing The Secret of Monkey Island, Maniac Mansion and Prince of Persia. The power supply was located in the monitor, which made upgrading difficult.
source: wikipedia
Autopsy:
Heath / Zenith pioneered the laptop computer market in 1985, with “lunchbox” portable computer Z 171, the first MS DOS based small portable computer fit with two 5″1/4 floppy disks ans blue LCD screen, that was built for Heath / Zenith by Vadem Corp. under an OEM agreement, and purchased in large numbers by the US Internal Revenue Service. Next, in 1987, followed the Intel 8088-based Zenith 181 and Zenith 183, the latter being one of the very first laptops to be equipped with a hard disk.
The follow-on SupersPORT was substantially larger and heavier, but provided much-improved performance through the use of the Intel 286 processor. It was selected by the US Army and Navy in one of the first major government purchases of laptop computers.
from Wikipedia:
Zenith Data Systems (ZDS) was a division of Zenith founded in 1979 after Zenith acquired Heathkit, who had, in 1977, entered the personal computer market.
Headquartered in Benton Harbor, Michigan, Zenith sold personal computers under both the Heath/Zenith and Zenith Data Systems names. Zenith was an early partner with Microsoft, licensing all Microsoft languages for the Heath/Zenith 8-bit computers. Conversely, Microsoft programmers of the early 80s did much of their work using Zenith Z 19 and Z-29 CRT display terminals hooked to central mainframe computers. The first H 8 Heathkit computer, sold in kit form, was built on Intel 8080 processor.
It run K7 audio-tape software, punched tape software (with puncher/readr H10) and HDOS (Heath Disk Operating System) software on 5″1/4 hard-sectored floppy disks. The CP/M operating system was adapted to all Heath/Zenith computers, in 1979. Next, the early Heath/Zenith computers (H88/H89 ans Z89) were based on the Z80 processors and ran either HDOS or CP/M operating systems.
source: wikipedia
Autopsy:
Rare Apple IIc PAL Modulator/Adapter (RF / Composite Color Output) Model A2M4023.
source: wikipedia
Autopsy:
The Philips NMS-8250, (NMS is short for “New Media Systems”) was a professional MSX 2 home computer for the high end market, with two built in floppy disk drives in a “pizza box” configuration. It featured professional video output possibilities, such as SCART for a better picture quality, and a detachable keyboard.
from Wikipedia:
MSX was the name of a standardized home computer architecture in the 1980s conceived by Kazuhiko Nishi, then Vice-president at Microsoft Japan and Director at ASCII Corporation. It is said that Microsoft led the project as an attempt to create unified standards among hardware makers. Despite Microsoft’s involvement, MSX-based machines were seldom seen in the United States and Britain, but they were popular in other markets.
Eventually 5 million MSX-based units were sold worldwide. It’s unclear why this attempt would be based in Japan rather than in the US or why Microsoft would not mention this involvement in its history while giving well known coverage to IBM-PC and Apple’s Macintosh, except for Nishi being the true sponsor and not Microsoft.
Nishi proposed MSX as an attempt to create a single industry standard for home computers. Inspired by the success of VHS as a standard for video cassette recorders, many Japanese electronic manufacturers along with GoldStar, Philips and Spectravideo built and promoted MSX computers. Any piece of hardware or software with the MSX logo on it was compatible with MSX products of other manufacturers. In particular, the expansion cartridge form and function were part of the standard; any MSX expansion or game cartridge would work in any MSX computer.
source: wikipedia msx.org msx.retro8bits.com sharksym.egloos.com
Autopsy:
This is my homebrew C2N232 Interface.
from Marko Mäkelä’s homepage:
The C2N232 is a small RS-232 interface that can be plugged to the cassette port of an 8-bit Commodore computer:
source: Marko Mäkelä’s Homepage
Autopsy:
from Wikipedia:
The Commodore 8050 and Commodore 8250 were dual unit 5¼” floppy disk drives for Commodore International computers. They used a wide rectangular steel case form similar to that of the Commodore 4040, and used the IEEE-488 interface common to Commodore PET/CBM computers.
The 8050 was a single sided drive, whereas the 8250 could use both sides of a disk simultaneously. Both used a “quad” density format storing approximately 0.5 megabyte per side. The density of media was similar to later PC high density floppy disks, but the 8050 and 8250 could not use PC high density disks reliably. Since “quad” density disks were rare even at the time, users quickly found that typical double density floppy disks had enough magnetic media density to work in these drives.
These drives were not dual mode, so they could not read or write disks formatted by the more common lower capacity Commodore 1541 or Commodore 4040 models. Some variants of these drives existed. The Commodore 8250LP was the 8250 in a lower profile, tan-colored case. The Commodore SFD-1001 was a single drive version of the 8250 in a Commodore 1541 style case (similarly to the Commodore 2031LP), often used by bulletin board systems for their physical similarity to 1541s and high capacity and speed.
source: wikipedia
Autopsy:
from Wikipedia:
The Commodore PET (Personal Electronic Transactor) was a home/personal computer produced by Commodore starting in 1977. It was a top seller in the Canadian, United States, and United Kingdom educational markets, and was Commodore’s first full-featured computer and would form the basis for their entire 8-bit platform. n the 1970s, Texas Instruments was the main supplier of CPUs for use in calculators. Many companies sold calculator designs based on their chip sets, including Commodore.
However, in 1975 TI increased the price to the point where the chip set alone cost more than what TI sold their entire calculators for, and the industry they had built up was frozen out of the market. 
Commodore responded by looking for a chip set of their own they could purchase outright, and quickly found MOS Technology, Inc. who were bringing their 6502 microprocessor design to market.
Along with the company came Chuck Peddle’s KIM-1 design, a small computer kit based on the 6502. At Commodore, Peddle convinced Jack Tramiel that calculators were a dead-end. Instead they should focus on making a “real” machine out of the KIM-1, and selling that for much higher profits. Tramiel demanded that Peddle, and Tramiel’s son, Leonard, create a computer in time for the June 1977 Consumer Electronics Show, and gave them six months to do it. The result was the first all-in-one home computer, the PET. The first model was the PET 2001, including either 4 KB (the 2001-4) or 8 KB (2001-8) of 8-bit RAM. It was essentially a single-board computer with discrete logic driving a small built-in monochrome monitor with 40×25 character graphics.
The machine also included a built-in Datassette for data storage located on the front of the case, which left little room for the keyboard. The data transfer rate to cassette was 1500 baud, duplicated for safety, giving an effective rate of 750 baud. The 2001 was announced at the ’77 Winter CES in January 1977 and the first 100 units were shipped in mid October 1977. However they remained back-ordered for months, and to ease deliveries they eventually cancelled the 4 kB version early the next year. Two more machines were released in the PET series.
The CBM 8000 included a new display chip which drove an 80×25 character screen, but this resulted in a number of software incompatibilities with programs designed for the 40 column screen, and it appears to have been unpopular as a result. The machine shipped with 32 kB standard as the 8032, but allowed another 64 kB to be added externally. Later the upgrade was installed from the factory, creating the 8096.
source: wikipedia petlibrary.tripod.com
My homebrew Powersupply adaptor for Amstrad CPC 6128 with a External Floppy Drive 3½.
Parados Installation Photo Gallery:
ParaDOS is 16kB ROM that replaces the AmsDOS. Allows to use double-sided floppy disks and some more disk formats.
source: grimware.org
![APPLE ][ Serial Cable & Serial USB Adapter](https://www.nightfallcrew.com/wp-content/gallery/apple-iic-apple-disk-transfer-prodos/IMG_3870.jpg?e69974 "APPLE ][ Serial Cable & Serial USB Adapter")
Foto review of the Serial cable and Transfer program:
![Apple ][ Receiving ASCII File](https://www.nightfallcrew.com/wp-content/gallery/apple-iic-apple-disk-transfer-prodos/IMG_3837.jpg?e69974 "Apple ][ Receiving ASCII File")
ADTPro may be used to transfer Apple diskette/disk images in DOS or ProDOS/SOS format.
The Apple client side happens to run under ProDOS or SOS, but it is perfectly capable of reading or writing Apple DOS (or Pascal, or CP/M, or…) diskettes.
source: adtpro.sourceforge.net
Foto review of 3½ Floppy adapter:
Thanks to B.C for the Floppy adapter.
source: ebay retro-zone.org amstrad hack page
Autopsy:
from Wikipedia:
The Apple IIc, the fourth model in the Apple II series of personal computers, was Apple Computer’s first endeavor to produce a portable computer.
The end result was a luggable 7½ pound notebook-sized version of the Apple II that could easily be transported from place to place. The c in the name stood for compact, referring to the fact it was essentially a complete Apple II computer setup (minus display and power supply) squeezed into a small notebook sized housing.
While sporting a built-in floppy drive and new rear peripheral expansion ports integrated onto the main logic board, it lacked the internal expansion slots and direct motherboard access of earlier Apple IIs, making it a closed system like the Macintosh. However that was the intended direction for this model—a more appliance-like machine, ready to use out of the box, requiring no technical know-how or experience to hook up and therefore attractive to first-time users.
Useful links: Serial Cable Pinout & Apple Disk Transfer ProDOS – Apple 2c FAQ – Apple DOS 3.3 Dump – DOS Serial Transfer
source: wikipedia
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