tag:blogger.com,1999:blog-6993165553021868648.post7510243015513928691..comments2024-03-27T05:39:24.505-04:00Comments on Nerdly Pleasures: IBM PCjr. and Tandy 1000 Sound : Multiplexer WeirdnessGreat Hierophanthttp://www.blogger.com/profile/04409413307024477304noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-6993165553021868648.post-8460088631416546482014-11-25T16:59:07.410-05:002014-11-25T16:59:07.410-05:00This is a reply to a comment that was somehow wron...This is a reply to a comment that was somehow wrongly filtered out by the spam filter. The original comment was : <br /><br />Very interesting stuff. One issue though, either I'm confused or the chart detailing the Tandy 1000 SX/EX modes has some errors. Mode 011 is described twice and 001 is not described at all. If I'm reading this right, the external speaker behaves the same as in the older 1000s with bits 6 and 5, ignoring bit 4, and the internal speaker is mute if bit 4 is set, IO channel if bit 6 is 0 and bit 5 is 1, and PC speaker + SN76496 otherwise. Does that sound right? <br /><br />My response :<br /><br />The 011/001 error has been fixed, and you have it right otherwise.Great Hierophanthttps://www.blogger.com/profile/04409413307024477304noreply@blogger.comtag:blogger.com,1999:blog-6993165553021868648.post-91632584600579778452014-11-25T14:16:23.629-05:002014-11-25T14:16:23.629-05:00Very interesting stuff. One issue though, either ...Very interesting stuff. One issue though, either I'm confused or the chart detailing the Tandy 1000 SX/EX modes has some errors. Mode 011 is described twice and 001 is not described at all. If I'm reading this right, the external speaker behaves the same as in the older 1000s with bits 6 and 5, ignoring bit 4, and the internal speaker is mute if bit 4 is set, IO channel if bit 6 is 0 and bit 5 is 1, and PC speaker + SN76496 otherwise. Does that sound right?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6993165553021868648.post-43963610165196801362013-06-15T19:46:38.090-04:002013-06-15T19:46:38.090-04:00Your posts are extremely interesting, keep it up !...Your posts are extremely interesting, keep it up !<br /><br />Best regards <br /><br />Aybenoreply@blogger.com