prepare osic1p cpeekc/cpeekcolor/cpeekrevers, replaces #532

libsrc/osic1p/cpeekc.s

@@ -0,0 +1,17 @@
+;
+; 2017-06-21, Greg King
+;
+; char cpeekc (void);
+;
+; Get a character from OSI C1P screen RAM.
+;
+        .export         _cpeekc
+
+        .include        "extzp.inc"
+
+
+_cpeekc:
+        ldy     CURS_X
+        lda     (SCREEN_PTR),y
+        ldx     #>$0000
+        rts

libsrc/osic1p/cpeekcolor.s

@@ -0,0 +1,8 @@
+;
+; 2017-06-03, Greg King
+;
+; unsigned char cpeekcolor (void);
+;
+
+        .import         return1
+        .export         _cpeekcolor := return1  ; always COLOR_WHITE

libsrc/osic1p/cpeekrevers.s

@@ -0,0 +1,9 @@
+;
+; 2017-06-15, Greg King
+;
+; unsigned char cpeekrevers (void);
+;
+; Get a reverse attribute from screen RAM
+;
+        .import         return0
+        .export         _cpeekrevers := return0 ; No attribute