There is a copy+paste bug:
Index: cpu/ppc/spr.fth =================================================================== --- cpu/ppc/spr.fth (wersja 3782) +++ cpu/ppc/spr.fth (kopia robocza) @@ -426,7 +426,7 @@ mfspr tos,der c; code der! ( n -- ) - mtspr immr,tos + mtspr der,tos lwz tos,0(sp) addi sp,sp,1cell c;
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