Started by TFM, 21:01, 20 April 11
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Quote from: Gryzor on 19:20, 21 April 11Is the port specific to the PCW?
Quote from: MacDeath on 19:02, 23 April 11What are the different plugs ? (DIN ? other ? )If you can find the connectics, you can certainly craft some adapter for common mouses from this era... Atari ST mouse per example...
QuoteMemory is 1Mb of RAM, and 1Mb of Flash (similar to a non-volatile RAMdisc) which contains the BIOS, Rosanne, and the built-in software. Most of the Flash memory can be updated using software, but the first 64k (which contains the BIOS) can only be altered by plugging a reprogramming cartridge into the underside of the PCW.
QuoteThere is space on the main circuit board for an extra 1Mb RAM, an extra 1Mb flash, a hard drive interface and an interface to a colour VGA monitor. These would probably have to be fitted professionally. There is no expansion port as such; any expansion would have to be done either via the parallel port, or through the reprogramming socket in the base.
QuoteThis information is derived simply from seeing three PCW16s demonstrated at the Crawley PCW Club. Any inaccuracies are my own fault.
QuoteWith detailed knowledge of Rosanne, it would probably be easy to implement a basic CP/M 2 BIOS for it. One point to note is that "common memory" is at the bottom of the memory map rather than the top, and a hypothetical CP/M BIOS would have to perform paging gymnastics to translate CP/M BIOS calls into Rosanne calls.
Quote> MOTHERBOARDOnly 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 ( Video output connector (9) FDD power connector (10) Power supply connector (11) Backup battery and buzzer.
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.
Quote> UNDERNEATH TRAP DOORAmong the numerous expansions planned by Amstrad, this trap door allowed a ROM chip and a connector to be added.
Among the numerous expansions planned by Amstrad, this trap door allowed a ROM chip and a connector to be added.
Quote> KEYBOARD CLOSE-UPThe 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.
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.
QuoteThe three-button mouse in close-up with the communication ports in the background. The mouse uses a standard serial port and has a MS/PC mode switch, thus indicating that it could be PC-compatible (I did not test this yet). The screws allow for a solid connection.The keyboard featuring 102 keys, plugs in using a standard PS/2 connector on the back and is compatible indeed, though it should be noted that the Rosanne software keeps on requesting you to hit the 'yellow' key or to use the mouse! Fortunately (and that does depend on your taste and experience) most shortcuts correspond to the Windows convention.
Quote from: MacDeath on 14:28, 26 March 12but as it is still a Z80 machine, would it be possible to get something like SymbOS running on it ?or any new os, perhaps even CP/M ?
Quote from: TotO on 20:38, 27 March 12A shame that Amstrad don't put the same 16Mhz CPU into the CPC+ range.
Quote from: TFM/FS on 23:56, 27 March 12Thanks' god they did not! I like my undocumented and illegal opcodes
Quote from: MacDeath on 01:34, 28 March 12 According to what I posted, there is not a "real" Z80 inside the machine but an Asic containing an overclocked Z80 alongside the Video system (and perhaps other stuffs...).
Quote from: TotO on 10:36, 28 March 12I would have prefered to get a famous 16MHz CPC+ with 3"1/2 disk for all, instead of the existing one.
Quote from: TotO on 22:38, 28 March 12Sure, it's not.
Quote from: steve on 22:32, 29 March 12 Yes i know that but it is reduced to 3.3Mhz by the video timing, we would have to do the same for software to run at the proper speed if the software used software timing loops Etc.
Quote from: SyX on 15:37, 30 March 12All my NOPs run to 4MHz , and the same happen with other few z80 instructions
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