Add ZIP rev F.

Makefile

@@ -3,6 +3,7 @@ all: zip1.lst  zip1.bin  zip1-check \
      zip3.lst  zip3.bin  zip3-check \
      zip3a.lst zip3a.bin zip3a-check \
      zip3b.lst zip3b.bin zip3b-check \
+     zip3f.lst zip3f.bin zip3f-check \
      ezip2a.lst ezip2a.bin ezip2a-check \
      ezip2b.lst ezip2b.bin ezip2b-check \
      ezip2c.lst ezip2c.bin ezip2c-check \
@@ -64,6 +65,16 @@ zip3b-check: zip3b.bin
 	echo "98ab866beb68f1d78b978a36106e611fd9196ffe7cd6d2e534c145197be3ebc1 zip3b.bin" | sha256sum -c -
 
 
+zip3f.p zip3f.lst: zip.asm
+	asl zip-late.asm -o zip3f.p -L -OLIST zip3f.lst -D iver='$$0306'
+
+zip3f.bin: zip3f.p
+	p2bin -r '$$0900-$$27ff' zip3f.p
+
+zip3f-check: zip3f.bin
+	echo "6bcc991eb5bdc55a6c0ddb6f307c630ee273f7b95ad0d5f3bc1d9e34ee0ed988 zip3f.bin" | sha256sum -c -
+
+
 ezip2a.p ezip2a.lst: ezip.asm
 	asl ezip.asm -o ezip2a.p -L -OLIST ezip2a.lst -D iver='$$0201'
 

README.md

@@ -65,10 +65,11 @@ Revision B added support for splitting the screen into two windows.
 
 ## Later ZIP interpreters
 
-Between Revision B and revision F of the Apple II ZIP interpreters, a
+Between revision B and revision F of the Apple II ZIP interpreters, a
 substantial rearrangement of the code occurred. These and later changes
-to the v3 interpreter have not yet been fully analyzed, and are not currently
-represented here.
+to the v3 interpreter have not yet been fully analyzed.
+
+Currently revision F can be built from the source file "zip-late.asm".
 
 The disk I/O routines are derived from RWTS but no longer
 structured in the same way as RWTS, and are now more tightly integrated with