Merge https://github.com/cc65/cc65

[cc65] / asminc / cbm610.inc

diff --git a/asminc/cbm610.inc b/asminc/cbm610.inc
index 10d194ea7acf25c39e12a71375780684b49b215e..b1b03eb1d13e64c1e1b02aca15f67d36fe9caa61 100644 (file)
--- a/asminc/cbm610.inc
+++ b/asminc/cbm610.inc
@@ -1,18 +1,21 @@
 ;
-; Zeropage and I/O definitions for the CBM 610
+; Zero page variables and I/O definitions for the CBM 610
 ;
 ; Taken from a kernal disassembly done by myself in 1987.
 ;
-; Ullrich von Bassewitz, 28.09.1998
+; 1998-09-28, Ullrich von Bassewitz
+; 2014-04-02, Greg King
 
 
 ; ---------------------------------------------------------------------------
 ; Zeropage stuff
 
-ExecReg         := $00
-IndReg          := $01
+ExecReg         := $00          ; Controls execution memory bank
+IndReg          := $01          ; Controls indirect indexed load-store bank
 
 TXTPTR          := $85          ; Far pointer into BASIC source code
+FNAM            := $90          ; Far pointer to LOAD/SAVE file-name
+FNAM_LEN        := $9D          ; Holds length of file-name
 
 ; ---------------------------------------------------------------------------
 ; Screen size