Your Train
grew a brain.

Real switches and signalling. Manual driving. Momentum, gravity and grade. Version 4 turns Mon-o-Rail from a line between stops into a network you can design, automate and actually drive (and derail!)

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DESTINATIONMineROUTE184 mBLOCK AHEADCLEAR

V3 AUTOMATION MIGRATION

Your save should carry forward. Automation needs a quick rewrite.

Back up important worlds first. Numeric station indices are gone in v4: give every stop a name, point your programs at that exact name, and your railway is back in business.

Name every stop with a LabellerGive each station and dock a clear, ideally unique Labeller name.
Replace numeric IC10 targetsUse HASH("Exact Station Name") anywhere a program selects a destination.
Check power availabilityTrains now might consume more or less power than in previous versions, based on various factors such as gravity and track topology.
If you don't use the logic stack, that's it!You can keep reading of course, but a quick code change and labeller run will get you back up and running.
Update LogicStack timetables, if anyStation destinations and named waits now use their two-slot hash instructions.
Update LogicStack readsLive outputs now occupy slots 54-62, with the read-only program counter in slot 63.
Review train Mode writesMode is now 0 shortest, 1 force front, 2 force rear, 3 prefer front, or 4 least switch changes.