diff --git a/SourceGen/RuntimeData/Apple/Applesoft.sym65 b/SourceGen/RuntimeData/Apple/Applesoft.sym65
index 481a29d..90a4d64 100644
--- a/SourceGen/RuntimeData/Apple/Applesoft.sym65
+++ b/SourceGen/RuntimeData/Apple/Applesoft.sym65
@@ -69,12 +69,14 @@ BAS_AMPERV      @ $03F5 3   ;JMP to function that handles Applesoft '&' cmds
 ; TODO: there are many more
 ;
 BAS_ERROR       @ $D412     ;print error based on X-reg
-BAS_FRMNUM      @ $DD67     ;evalute expression at TXTPTR, result into FAC
+BAS_FRMNUM      @ $DD67     ;call FRMEVL, confirm expr is numeric
+BAS_FRMEVL      @ $DD7B     ;eval expr at TXTPTR (num/str), result into FAC
 BAS_SYN_ERROR   @ $DEC9     ;throw SYNTAX ERROR
 BAS_CHKCOM      @ $DEBE     ;checks TXTPTR for comma
 BAS_ILLQ_ERROR  @ $E199     ;throw ILLEGAL QUANTITY ERROR
 BAS_GETADR      @ $E752     ;convert FAC to 2-byte integer in LINNUM
 BAS_GETBYT      @ $E6F8     ;gets byte, in X/FACLO
+BAS_QINT        @ $EBF2     ;converts FP value in FAC to int in FAC+1..FAC+4
 BAS_HFNS        @ $F6B9     ;get hi-res x/y for hplot
 
 ;
diff --git a/SourceGen/RuntimeData/Apple/DOS33.sym65 b/SourceGen/RuntimeData/Apple/DOS33.sym65
index 83b1a2c..bdfc4ba 100644
--- a/SourceGen/RuntimeData/Apple/DOS33.sym65
+++ b/SourceGen/RuntimeData/Apple/DOS33.sym65
@@ -16,3 +16,25 @@ DOS_CHARIO      @ $03ea     ;jumps to routine that connects DOS KSW/CSW
 ; I/O scratchpad RAM addresses
 ; See Apple II Reference Manual table 26 (page 83)
 DOS_BOOT_SLOT   @ $05f8     ;disk controller boot slot
+
+DOS_FILE_LENGTH @ $aa60 2   ;range length for LOAD and BLOAD
+DOS_FILE_ADDRESS @ $aa72 2  ;address of last file loaded
+
+RWTS_ENTRY      @ $b7b5     ;disable interrupts and call RWTS
+
+RWTS_PARAM_BLOCK @ $b7e8    ;RWTS parameter block
+RWTS_TABLE_TYPE @ $b7e8     ;table type, must be $01
+RWTS_SLOT_NUM   @ $b7e9     ;slot number times 16
+RWTS_DRIVE_NUM  @ $b7ea     ;drive number (1 or 2)
+RWTS_VOL_EXP    @ $b7eb     ;volume number expected (0 matches all)
+RWTS_TRACK_NUM  @ $b7ec     ;track number (0 - 34)
+RWTS_SECTOR_NUM @ $b7ed     ;sector number (0-15)
+RWTS_DCT        @ $b7ee 2   ;pointer to Device Characteristics Table
+RWTS_BUF        @ $b7f0 2   ;pointer to data buffer for READ/WRITE
+RWTS_PARTIAL_COUNT @ $b7f3  ;byte count for partial sector
+RWTS_CMD_CODE   @ $b7f4     ;0=seek, 1=read, 2=write, 4=format
+RWTS_ERR_CODE   @ $b7f5     ;err code (when carry set)
+; $10=write protected, $20=volume mismatch, $40=drive error, $08=INIT error
+RWTS_VOL_FOUND  @ $b7f6     ;volume number found
+RWTS_SLOT_FOUND @ $b7f7     ;slot number found
+RWTS_DRIVE_FOUND @ $b7f8    ;drive number found