cbm stuff from greggs pull request

2017-12-11 19:49:14 +01:00
parent 947b09ad96
commit 8902730756
21 changed files with 936 additions and 7 deletions
--- a/libsrc/cbm510/cpeekcolor.s
+++ b/libsrc/cbm510/cpeekcolor.s
@@ -0,0 +1,24 @@
+;
+; 2016-02-28, Groepaz
+; 2017-06-19, Greg King
+;
+; unsigned char cpeekcolor (void);
+;
+
+        .export         _cpeekcolor
+
+        .import         CURS_X: zp, CRAM_PTR: zp
+
+        .include        "cbm510.inc"
+
+
+_cpeekcolor:
+        ldx     IndReg
+        lda     #$0F
+        sta     IndReg
+        ldy     CURS_X
+        lda     (CRAM_PTR),y    ; get color
+        stx     IndReg
+        and     #$0F
+        ldx     #>$0000
+        rts