Handling with double-shift (DS)
After switching on you should be welcomed with the start screen:
All control commands of ZXmaster function with a double-shift key (DS shortened in the
manual) by shortly pressing the shift key twice consecutively and a second key after (showed
invers in the start screen.
The key have to be pressed short and fast – the maximum timeout between two keys may not
exceed 1 second for save detection. The reason for this control keys is that the normal ROMs
like ZX80 or ZX81 wouldn't influenced with this key combination (double-shift has no special
meaning).
All double-shift keys are processed from the ZXmaster only and not detected by the
running instance.
Switch to instance (DS-0 to DS-7)
With DS and 0 to 7 you can switch to the desired instance. If the instance is first used it will be
automatically initialized and a second call will just continue the program in the instance. The
firmware ZXmaster saves the information for all instances and stores all registers in memory
and the instruction pointer.
Instances can be interrupted any time by switching to another instance and are continued after
switching back. Technical the switching is based on NMI which are catched automatically from
instance 0 which handels all necessary action. Even the keyboard processing is done by
instance 0 only and will be injected to the current instance.
V1.9 - 06/2016
ZXmore & ZXmaster – user manual
page 7 from 29
