Fix mod

README.md

@@ -1,33 +1,13 @@
-# The many faces of EForth
+# EForth
 
 EForth is a delightfully minimalist approach to Forth originated by Bill Muench and Dr. C. H. Ting.
 
-In its original form metacompilation is avoided.
+For more information visit:
+
+[https://eforth.appspot.com/](https://eforth.appspot.com/)
 
 ## Directories
 
-* reference/ - EForth Reference Material
+* ueforth/ - µEforth - EForth refactored to allow source boostraping.
 * circleforth/ - A minimalist Forth modeled after toy Lisps.
-* ueforth/ - micro EForth - EForth refactored to allow source boostraping.
-
-## EForth Quirks
-
-EForth uses `FOR..NEXT` in favor of `DO..LOOP`:
-[FOR/NEXT](https://github.com/TG9541/stm8ef/wiki/eForth-FOR-..-NEXT).
-
-This construct has the odd property that it iterates one "extra" time for zero.
-
-```
-: FOO 10 FOR R@ . NEXT ; FOO
- 10 9 8 7 6 5 4 3 2 1 0  ok
-```
-
-To permit a more ordinary loop the `AFT` word is used in the sequence `FOR..AFT..THEN..NEXT`.
-
-```
-: FOO 10 FOR ( 1st time only ) AFT R@ . THEN NEXT ; FOO
- 9 8 7 6 5 4 3 2 1 0  ok
-```
-
-The even more enigmatic `FOR..WHILE..NEXT..ELSE..THEN` is used in place of `DO..LEAVE..LOOP`.
-It allows a while condition to early out of a counted loop.
+* reference/ - EForth Reference Material

ueforth/common/opcodes.h

@@ -16,16 +16,14 @@ typedef uintptr_t ucell_t;
 #ifndef SSMOD_FUNC
 # if __SIZEOF_POINTER__ == 8
 typedef __int128_t dcell_t;
-typedef __uint128_t udcell_t;
 # elif __SIZEOF_POINTER__ == 4 || defined(_M_IX86)
 typedef int64_t dcell_t;
-typedef uint64_t udcell_t;
 # else
 #  error "unsupported cell size"
 # endif
 # define SSMOD_FUNC dcell_t d = (dcell_t) *sp * (dcell_t) sp[-1]; \
-                    --sp; *sp = (cell_t) (((udcell_t) d) % tos); \
-                    tos = (cell_t) (d < 0 ? ~(~d / tos) : d / tos)
+                    --sp; cell_t a = (cell_t) (d < 0 ? ~(~d / tos) : d / tos); \
+                    *sp = (cell_t) (d - ((dcell_t) a) * tos); tos = a
 #endif
 
 #define OPCODE_LIST \