This page includes a sample program demonstrating a simple guess a number game. Click run and then enter a number, look in the output box and you'll see your guess and one of three numbers following it:
Notes: This is known to work in FireFox, and does NOT work in Chrome up to v69. To implement this game a RAND instruction was added to the simulator (see Syntax section).
get get a number from keyboard into accumulator
print print contents of accumulator
load Val load accumulator with Val (Val unchanged)
store M store contents of accumulator into memory location called M (accumulator unchanged)
add Val add Val to contents of accumulator (Val unchanged)
sub Val subtract Val from contents of accumulator (Val unchanged)
goto L go to instruction labeled L
ifpos L go to instruction labeled L if accumulator is >= zero
ifzero L go to instruction labeled L if accumulator is zero
stop stop running
rand put random number between 0 and 100 in accumulator
M Num before program runs, set this memory location (called M) to numeric value Num
If Val is a name like Sum, it refers to a labeled
memory location. If Val is a number like 17, that value is
used directly. So add Sum means to add the contents of the memory
location named Sum to the accumulator value (leaving Sum's
contents unchanged), while add 1 means to add 1 to the
accumulator value.
If you want to see how the simulator works, Tools / Web Developer / Page Source in Firefox, Customize / Tools / View source in Chrome, or Developer / View Source in Safari.
This version has a limit of 1000 instructions by default, to make it easier to prevent infinite loops. The single-step version has no limit.