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lash 2023-04-03 09:18:04 +01:00
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README.md
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@ -20,7 +20,8 @@ The VM defines the following opcode symbols:
* `INCMP <arg> <symbol>` - Compare registered input to `arg`. If match, it has the same side-effects as `MOVE`. In addition, any consecutive `INCMP` matches will be ignored until `HALT` is called.
* `MSIZE <max> <min>` - Set min and max display size of menu part to `num` bytes.
* `MOUT <choice> <display>` - Add menu display entry. Each entry should have a matching `INCMP` whose `arg` matches `choice`. `display` is a descriptive text of the menu item.
* `MSEP <choice> <display> <direction>` - Define how to display a menu separator, when browsing menus that are too long. Direction `0` is forward, `>0` is backward. If a `>0` value is not defined, no previous step will be available.
* `MNEXT <choice> <display>` - Define how to display the choice for advancing when browsing menu.
* `MPREV <choice> <display>` - Define how to display the choice for returning when browsing menu.
### External code
@ -100,6 +101,11 @@ Menus too long for a single screen should be browseable through separate screens
When browsing additional menu pages, the template output should not be included.
### Menu defaults
Browsing menu display definitions (`MNEXT`, `MPREV`) as well as size constaints (`MSIZE`) should have sane defaults defined by the assembler if they are missing from the assembly code.
### Multipage support
Multipage outputs, like listings, are handled using the _sink_ output constraints: