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Re: Apple II Speaker
- Subject: Re: Apple II Speaker
- From: mjmahon@aol.com (Michael J. Mahon)
- Date: 04 Dec 2003 04:46:24 GMT
- Newsgroups: comp.sys.apple2
- Organization: AOL http://www.aol.com
- References: <bq7qf2$hpr$1@acme.gcfn.org>
- Xref: archiver1.google.com comp.sys.apple2:1177
Dave Althoff Jr wrote:
>Actually reading the speaker ($C030) clicks the speaker once, writing to
>it clicks it twice.
Only if you are using PEEK to read and POKE to write--both of which
are a little slow to be using for tone generation.
LOAD and STORE with absolute addresses both access the toggle
only once. STORE INDEXED (used by POKE) accesses it twice.
-michael
Check out amazing quality sound for 8-bit Apples on my
Home page: http://members.aol.com/MJMahon/