_tileAddr: address of the tile found by the last isSprTile().
mem command: shows the free system stack memory (headroom).
Comments anywhere, even inside expressions.
Expressions, argument lists and parameter lists can span several lines.
nat versions of min, max, clamp, sqrt, rnd, lerp, abs; rnd and lerp work over ranges above 32767.
Casts may contain spaces (( int )); (int) of a byte is accepted.
Source files with Windows (CRLF) line endings also compile.
Run-time errors instead of silent corruption: "Stack overflow." (recursion too deep), "Division by zero.".
New compile errors: "Line too long." (over 158 characters), types or members defined twice, returning a local custom type with text, custom-type array parameters.
Performance
Lofi programs run 1.5-2.0× faster (MAXIPS 133k → 230k), and compiled programs are 10-20 % smaller.
Graphics: lines about 2× faster, faster fills, memSet, memCpy, area copies, disks and circles; sin/cos 4× faster and more accurate.
Firmware 21 KB smaller, with more free memory for the stack.
Fixed: Lofi compiler and VM
break/continue in loops with local variables corrupted the stack.
++/--:
they changed the wrong byte in local arrays and array parameters;
++a, a.m++ used as a value, x = y++;, return v++; and increments in for clauses gave wrong results
Custom types:
wrong member addresses with text members;
locals overlapped a local array of custom types;
nested indexes (a[b.m].n) and members of array elements mixed up with another type in the same expression;
false "Type mismatch" errors.
Local texts shifted the variables declared after them, and local arrays didn't start at zero.
(byte) and (bool) casts didn't convert, and nat values above 32767 became negative as real.
Real numbers: arithmetic is now correctly rounded (it drifted towards zero), −0 equals 0, and printing is rounded (0.375 printed 0.374).
The compiler:
crashed on declaration errors and on a . after a variable that is not a custom type;
gave false "Stack overflow." errors on big programs.
Fixed: OS
Editor:
lines over 158 characters broke scrolling and line numbers, and could duplicate a character;
long lines could overflow when drawn.
Keyboard and mouse are no longer handled inside interrupts: no re-entered keyboard interrupt, and short clicks are no longer lost while the editor is busy.
Firmware update checks the file before writing the new version number.
Off-screen lines are skipped instead of drawn pixel by pixel; no more stray pixels at the window edge with disks.
CLI: data with short hex values read leftover characters, and compile errors could show a corrupted word.
