the AMAL Editor

A range of useful Test instructions is available, and they all use the same general syntax, as follows:

INSTRUCTION condition : list of statements

The statements after the condition will only be executed if the condition is True, otherwise the following commands will be completely ignored and the program will jump directly to the next line of this Environment routine:

AMAL Environment Command                     Notes

IF SCREEN number                             True if the screen has been opened
IF NOT SCREEN number                         True if the screen is currently closed
IF BANK number                               True if the bank has been reserved
IF NOT BANK number                           True if the bank is not reserved
IF REG number,value                          True if Reg A to Z or 0 to 25 equals value

To get you started, type in these texts:

E> Screen Open 0,320,200,16,Lowres
   Double Buffer
   Load "AMOSPro_Tutorial:Objects/Bobs.Abk",1
   Channel To Bob 0,1
   Screen 0
   Bob 1,100,100,1
   AMAL Channel 0
   Let X=0;
   Let Y=0;
   L:
   Let X=X+1;
   Let Y=Y+1;
   Pause;
   Jump;