Sinclair Computers Discussion

This blog is intended to provide a discussion for all things linked with Sinclair computers (the ZX80, ZX81, Spectrum, QL and Cambridge Z88). RWAP Software provide support for all of these computers and we welcome your comments.

Tuesday, February 23, 2010

Sinclair ZX Spectrum News
We have now arranged to take on marketing of two new products for the Sinclair ZX Spectrum, both built in the Netherlands to a high standard, and fully compatible with the DivIDE Plus Compact Flash Interface.  We have re-written the manuals to be more user friendly and these products will be listed for sale soon on our new retro computer website - SellMyRetro.com

ZX Spectrum PC Keyboard Interface
The first of these products is the PC Keyboard Interface.  This allows you to connect a UK/US English or Spanish PS/2 keyboard to the Sinclair ZX Spectrum and this then replaces the Spectrum's own keyboard.  You can even use a USB keyboard if you have an adaptor. 

The PC Keyboard Interface works perfectly together with the following:
  • ZX Spectrum 16K / 48K / 48K+ / 128K / +2
  • DivIDE / DivIDE Plus
  • MB02 / MB02+IDE – solving compatibility issues at the moment (updated 14 dec 2008)
  • Kempston Mouse Turbo (first version)
  • ZX-MMC+
There are, however, known compatibility issues with the ZX Spectrum +2A / +2B / +3 - if you wish to use the PC Keyboard Interface with these computers, you will need to make some modifications inside your ZX Spectrum.

The interface even provides you additional function, including the ability to record macros which are retained for when you switch on the Spectrum.

ZX Spectrum K-Mouse 2008 Interface
The second product is the K-Mouse 2008 Interface.  This enables you to connect a PS/2 mouse (or USB version with adaptor) to your ZX Spectrum for use with software - several games have been converted to work with the interface by Velesoft.

This interface also incorporates a Kempston compatible joystick interface, with automatic switching between the two types of control (you cannot use them both at the same time, but pressing a mouse button or moving the joystick diverts control to that peripheral).

You can even add a composite video connector to the interface to provide composite video for a standard Spectrum.

Keep your eyes on our new website sellmyretro.com for details of prices etc.
We have started some more collaborative work to bring additional products to the market.

Sinclair ZX81 News

First of all, following our successful launch of replacement keyboard membranes for the Sinclair ZX81 is software for the Sinclair ZX81, which has mainly come about as a result of the ZX80/ZX81 forums.


Details and downloads are available from our Sinclair ZX81 software page.  This includes example programs showing how to achieve hi-resolution graphics on the Sinclair ZX81 - you need to make a very minor modification to your 16K (or larger) memory pack and install some HRG drivers from the internet.  You can then achieve graphics such as shown here.

We have then started discussions on possible future projects for Sinclair ZX81 hardware, including an SD/MMC card reader, to allow you to load software instantaneously on the Sinclair ZX81, in a similar vein to the DivIDE Plus on the Sinclair ZX Spectrum.  We are also considering a ZX81 AY interface, building on from our experience with the Zaxon AY Sound Interface for the ZX Spectrum.

At the moment, we are asking people to contact us to let us know of their interest in the projects and to help us prioritise - if you have any ideas / suggestions as to the best way to implement these projects, then we would love to hear from you.

Details appear on our Sinclair ZX81 Projects Page.

Monday, February 22, 2010

Following a discussion on the ZX80/ZX81 forums - we have now set up a couple of additional pages for Sinclair ZX81 users.

1. A projects page - we have detailed some of the projects we are considering getting designed and built for users.  We welcome your input and confirmation from people who might be interested.  We need to guage the potential market for each project so that we can also keep costs down!

2. A Sinclair ZX81 Software page - this details some of the free software available for download for use with ZX81 emulators on your PC (with the author's permission).