Funge-98 Standard Modes

Fingerprint 0x4d4f4445 ('MODE')

Currently under development.

After successfully loading MODE, the instructions H, I, Q, and S take on new semantics, which alter four new states or 'modes' of the current IP.

H toggles an internal flag called hovermode on and off. In hovermode, the instructions >, <, ^, v, |, and _ treat the IP's delta relatively - instead of setting the dx to 0 and dy to -1, ^ would instead simply subtract 1 from dy.

The I "Toggle Invertmode" instruction toggles an internal flag called invertmode. When invertmode is active, cells are pushed on the stack onto the bottom instead of the top.

The Q "Toggle Queuemode" instruction toggles an internal flag called queuemode. When queuemode is active, cells are popped off the stack from the bottom instead of the top.

S toggles switchmode on and off. In switchmode, the pairs of instructions [ and ], { and }, and ( and ) are treated as switches. When one is executed, the cell it is located in is immediately overwritten with the other instruction of the pair, providing a switching mechanism and a way to seperate coincident IP's.