readme

docs/source/index.rst

@@ -24,8 +24,8 @@ Prog8 is copyright © Irmen de Jong (irmen@razorvine.net | http://www.razorvine.
 This software is licensed under the GNU GPL 3.0, see https://www.gnu.org/licenses/gpl.html
 
 
-Appetizer
----------
+Code example
+------------
 
 When this code is compiled::
 
@@ -53,7 +53,9 @@ When this code is compiled::
                 c64.CHROUT(bye[c])
 
 
-            float clock_seconds = ((mkword(c64.TIME_LO, c64.TIME_MID) as float) + (c64.TIME_HI as float)*65536.0) / 60
+            float clock_seconds = ((mkword(c64.TIME_LO, c64.TIME_MID) as float)
+                                    + (c64.TIME_HI as float)*65536.0)
+                                     / 60
             float hours = floor(clock_seconds / 3600)
             clock_seconds -= hours*3600
             float minutes = floor(clock_seconds / 60)
@@ -70,6 +72,7 @@ When this code is compiled::
     }
 
 
+
 you get a program that outputs this when loaded on a C-64:
 
 .. image:: _static/hello_screen.png

examples/test.p8

@@ -1,26 +1,41 @@
-%import c64lib
-%import c64utils
+    %import c64lib
+    %import c64utils
+    %import c64flt
+
+    ~ main {
+        sub start() {
+            ; set text color and activate lowercase charset
+            c64.COLOR = 13
+            c64.VMCSB |= 2
+
+            ; use optimized routine to write text
+            c64scr.print("Hello!\n")
+
+            ; use iteration to write text
+            str question = "How are you?\n"
+            for ubyte char in question
+                c64.CHROUT(char)
+
+            ; use indexed loop to write characters
+            str bye = "Goodbye!\n"
+            for ubyte c in 0 to len(bye)
+                c64.CHROUT(bye[c])
 
 
-~ main {
-
-    sub start() {
-
-        uword num_hours=2
-        uword num_minutes=10
-        uword num_seconds=14
-
-        uword total =     num_hours * 3600 + num_minutes * 60 + num_seconds
-
-        uword total2 =     num_hours * 3600
-                            + num_minutes * 60
-                            + num_seconds
-
-        c64scr.print_uw(total)
-        c64.CHROUT('\n')
-        c64scr.print_uw(total2)
-        c64.CHROUT('\n')
+            float clock_seconds = ((mkword(c64.TIME_LO, c64.TIME_MID) as float)
+                                    + (c64.TIME_HI as float)*65536.0)
+                                     / 60
+            float hours = floor(clock_seconds / 3600)
+            clock_seconds -= hours*3600
+            float minutes = floor(clock_seconds / 60)
+            clock_seconds = floor(clock_seconds - minutes * 60.0)
 
+            c64scr.print("system time in ti$ is ")
+            c64flt.print_f(hours)
+            c64.CHROUT(':')
+            c64flt.print_f(minutes)
+            c64.CHROUT(':')
+            c64flt.print_f(clock_seconds)
+            c64.CHROUT('\n')
+        }
     }
-
-}