How to build a clock on the C64

Channel:

The WP Guru

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29,700

Published on March 23, 2018 10:12:25 PM ● Video Link: https://www.youtube.com/watch?v=J2rUiV-hDmw

Category:

Guide

Duration: 30:29

874 views

36

In this video I'll demonstrate how to build a simple clock on the C64. We'll go through this process step by step, including the built-in TI and TI$ variables, string formatting with LEFT$, RIGHT$ and MID$, as well as screen formatting. Here's the code I'm writing:

5 input "qwhat is the current time (hhmm
ss) ";ti$
10 print chr$(147):print chr$(5)
20 a$ = left$(ti$,2)
25 a$ = a$ +":"
30 a$ = a$ + mid$(ti$,3,2)
35 a$ = a$ +":"
40 a$ = a$ +right$(ti$,2)
50 gosub 200
60 print chr$(19)
70 print "qqqqqqqqqqq]]]]]]]]]]]]]]curre
nt time"
80 print "]]]]]]]]]]]]]]]]";
90 print a$
100 goto 20
200 rem print a box
210 print chr$(19)
220 print "qqqqqqqqqq]]]]]]]]]]]]]UCCCCC
CCCCCCCI"
230 print "]]]]]]]]]]]]]B]]]]]]]]]]]]B"
240 print "]]]]]]]]]]]]]B]]]]]]]]]]]]B"
250 print "]]]]]]]]]]]]]JCCCCCCCCCCCCK"
299 return

This code is also available on GitHub: https://gist.github.com/versluis/0b2ecdd3f39ead5f7ed1ff6839d7ac53

Inspired by David's video, in which he connects an LCD screen to his C64's User Port: https://www.youtube.com/watch?v=vV8FbwobrKY


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