diff --git a/src/mods/t00only.a b/src/mods/t00only.a
index 13d56a3..b60cee5 100644
--- a/src/mods/t00only.a
+++ b/src/mods/t00only.a
@@ -73,6 +73,7 @@ AnalyzeT00
          !source "../patchers/t00_sunburst.a"
          !source "../patchers/t00_sve.a"
          !source "../patchers/t00_swordthrust.a"
+         !source "../patchers/t00_scottforesman_dos33.a"
          ; ----- add new DOS 3.3 patchers above this line -----
          !source "../patchers/t00_nibtable.a"   ; clobbers $2000..$2095 (AnalyzeT00 is decompressed into $2000)
          !source "../patchers/t00_rwts.a"       ; must run after all other patchers that might modify RWTS code
diff --git a/src/patchers/t00_scottforesman_dos33.a b/src/patchers/t00_scottforesman_dos33.a
new file mode 100644
index 0000000..753e48c
--- /dev/null
+++ b/src/patchers/t00_scottforesman_dos33.a
@@ -0,0 +1,30 @@
+;-------------------------------
+; #T00SCOTTFORESMANDOS33
+; nibble count during early boot
+;
+; tested on
+; - Addition and Subtraction 3 (Scott, Foresman and Company)
+; - Decimals 2 (Scott, Foresman and Company)
+; - Fractions 1 (Scott, Foresman and Company)
+; - Fractions 2 (Scott, Foresman and Company)
+; - Multiplication 2 (Scott, Foresman and Company)
+; - Percent 1 (Scott, Foresman and Company)
+;-------------------------------
+         ; gTrack = 0
+         lda   #$0B
+         ldx   #$15
+         ldy   #$06
+         jsr   compare    ; if T00,S0B,$15 ==
+         !byte $EE,$F3,$03
+         !byte $20,$00,$87
+         bcs   +
+
+         jsr   PrintByID
+         !byte s_sfc
+
+         inx
+         inx
+         inx
+         jsr   modify1    ; then set T00,S0B,$18 ==
+         !byte $2C
++