Among the numerous expansions planned by Amstrad, this trap door allowed a ROM chip and a connector to be added.
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KEYBOARD CLOSE-UP
The keyboard was a colored version of a standard PC-AT model. Each fuction key allowed a software module to be called. Four-color keys was used to manage system windows.
Like all other Amstrad PCW computers, the inside electronics is made up of two boards. The upper one **(1)** is the analog board, holding the power supply unit and the video circuitry. The logic board **(2)** is located under it.
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MOTHERBOARD
Only two chips provide all the internal functions of the PCW-16, a Winbond I/O chip and an Amstrad custom chip.\
Provision is made for additional RAM and Flash RAM as well as a possible hard disk interface.
**(1)** 1 MB RAM chips. Provision is made for a second 1 MB RAM bank\
**(2)** A trap door, allowed to insert a ROM chip from underneath the computer. However, in this version, the location is empty, no socket is soldered\
**(3)** 1 MB Intel Flash RAM chip\
**(4)** Custom Amstrad chip. Holds a 16 MHz Z80 CPU, video interface, addresses and data bus management\
**(5)** Winbond 83787 I/O chip. One found this chip in numerous PC compatible I/O cards\
**(6)** Provision is made for additional Flash RAM chips\
**(7)** Provision is also made for either a second floppy drive, or an hard disk drive\
**(8)** Video output connector\
**(9)** FDD power connector\
**(10)** Power supply connector\
**(11)** Backup battery and buzzer.
The PCW 16 replaced the PCW 9512. Contrary to the previous models, which used a text-based interface, the PCW 16 used a graphical user interface called The Desktop. The computer didn't run CP/M like the old PCW computers, but had its own operating system called Roseanne. Even though CP/M wasn't supplied, it was adapted to this machine by independent developers.
Unlike the previous PCW models which came with only the Locoscript word-processor, the PCW16 came with a complete range of built-in software - word-processor, spreadsheet, address book, diary/alarm, calculator and file manager.
Luckily, Amstrad abandoned the Hitachi 3" floppy format and switched to the standard MSDOS 3.5" 1.44 MB double-density floppy disk. The Roseanne system could use long filenames (up to 31 characters). The display was also standard: 640 x 480 VGA mode.
Amstrad provided Several internal expansions for the PCW-16, 1 MB RAM, 2 MB Flash RAM, Application ROMs, second FDD drive; but it seems that none of them saw the light.
Rob W. remembers:
Dixons UK were selling the PCW-16 as late as December 1997, bundled with a Citizen Dot-Matrix Printer for about £170, which seemed expensive, but up against the latest £1,999 P233-MMX Packard Bell at the time, it seemed somewhat cheap :)
Sadly, despite being taken in by its psychedelic keyboard colours and constant nagging, my dad didn't buy me this :(
But... the following year he bought me a P233-MMX for £600 and the rest is history.
Unfortunately, I have not seen one since. Wonder why...