From b6d7b3068a2d1e36d18e2494ebaa1ab0a472826e Mon Sep 17 00:00:00 2001 From: Joshua Bell Date: Thu, 7 Dec 2017 23:47:45 -0800 Subject: [PATCH] Update README.md --- README.md | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/README.md b/README.md index c146b39..0220c7d 100644 --- a/README.md +++ b/README.md @@ -1,4 +1,4 @@ -# The Cricket! - ProDOS Clock Driver +# _The Cricket!_ — ProDOS Clock Driver I acquired a Cricket sound/clock peripheral on eBay. Therefore it is now critical that we have a conforming ProDOS clock driver for it. @@ -6,7 +6,7 @@ I acquired a Cricket sound/clock peripheral on eBay. Therefore it is now critica ## Background -"The Cricket!" by Street Electronics Corporation, released in 1984, is a hardware peripheral for the Apple //c computer. It plugs into the serial port and offers a multi-voice sound synthesizer, a speech synthesizer, and a real-time clock. +_"The Cricket!"_ by Street Electronics Corporation, released in 1984, is a hardware peripheral for the Apple //c computer. It plugs into the serial port and offers a multi-voice sound synthesizer, a speech synthesizer, and a real-time clock. The disks supplied with the device include: * `/CRICKET/PRODOS.MOD` which can be BRUN to patch ProDOS in memory with a clock driver. @@ -52,3 +52,7 @@ Cricket disks on Asimov: Cricket Manual on Asimov: * ftp://ftp.apple.asimov.net/pub/apple_II/documentation/hardware/sound/Street%20Electronics%20The%20Cricket.pdf + +## FYI... + +In the Cricket manual there is a short sample BASIC program to set the clock without the use of any assembly routines, using `PR#2` to talk to the serial card followed by `PRINT` statements. This does not appear to work from ProDOS with the clock driver in place - the time ends up temporarily scrambled until the clock sorts itself out again. Assembly language routines do work, however. I believe ProDOS attempts to read the clock during the execution of the basic program, which interferes the device.