units designed to share an SVGA monitor between two different output sources. It is most commonly used on the Amiga to switch a monitor between the output of a graphics card (eg BVision) and of a scandoubler/flickerfixer (eg the EZVGA internal flickerfixer Mk2). Normally this is switched manually by a front-panel-operated remote toggle switch but the EZKey-XS makes provision for this switching to be carried out by using a keyboard keystroke combination (L_Amiga+R_Amiga+up_arrow) or by using the �CD/TV� button on an IR-equiped EZKey-XS.

Flash upgradeable

The EZKey-XS uses the very latest �flash� memory allowing its features (eg enhanced key mappings) to be updated in the future should needs arise. Please note that such upgrades can only be carried out by Eyetech and, like most other upgrades, that there will be a charge for this service.

Features available on both Amiga and PC keyboards

The following features are available using either An Amiga or PC keyboard.

Multiple keystroke recognition

Early A1200 keyboard adapters tried to emulate the original button pressing action af the A1200 matrix keyboard, and to do this they interfaced with an A1200 via its original 31-way ribbon cable slot. However due to technological limitations (at least within an economically acceptable price range) it was only possible (with the exception of control/modifier keys) to process one keystroke at a time. This meant that software (eg interactive games) that made use of multiple simultaneous keypresses would not work properly.

However because the EZKey-XS attaches further down the keyboard data chain it is able to process multiple key presses simultaneously. It does this by sending separate �key x is now down� and �key x is now up� codes to the Amiga so that the Amiga is able to easily maintain a full image of exact keypress status. This is the same whether a genuine Amiga serial keyboard or a PC keyboard is in use.

Extended keystroke actions.

Irrespective of whether a PC or Amiga keyboard is used with the EZKey-XS, four special L_Amiga, R_Amiga keystroke combinations are used to implement special functions on the EZKey-XS. (Of course the actual PC keys that map to the L_Amiga, R_Amiga and Help keys are dependant on the PC keymap selected - see below). Note also that L_Amiga, R_Amiga must be pressed (and held down) first, before the qualifier key to be effective.

Keys can be released in any order.

The extended keystroke functions currently implemented are:

L_Amiga, R_Amiga + Control

-> resets the Amiga. Proper reset

warning conventions are upheld.

L_Amiga, R_Amiga + Up arrow

-> toggles the xMON video switcher,

if fitted

L_Amiga, R_Amiga + Help

-> opens a console window and

provides a summary of EZKey-XS

keymapping options. Note that you

will need to have an �030/28

accelerator + 4MB fast RAM (or above)

installed in your Amiga for this feature

to work correctly.

L_Amiga, R_Amiga + Delete

-> switches the ATX power supply

on/off (if fitted and wired up). Proper

reset warning conventions are upheld.

Special features of the EZKey-XS when used with a PC keyboard

Power up keystroke sequence

The standard Amiga keyboard specification allows for the transmission (to the Amiga) of the codes for any keys held down when the Amiga initially powers up or is rebooted. Several accelerator manufacturers use this facility to (for example) disable the accelerator, start a procedure for updating a card�s flash ROM etc. All Amiga serial keyboards implement this convention, which is