{"id":800,"date":"2021-09-02T14:39:25","date_gmt":"2021-09-02T04:39:25","guid":{"rendered":"http:\/\/vk2idl.com\/?page_id=800"},"modified":"2021-09-11T13:55:05","modified_gmt":"2021-09-11T03:55:05","slug":"vz200-glass-rtty-encoder-decoder","status":"publish","type":"page","link":"https:\/\/vk2idl.com\/index.php\/vz200-glass-rtty-encoder-decoder\/","title":{"rendered":"VZ200 Glass RTTY (legacy article)"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"338\" src=\"http:\/\/vk2idl.com\/wp-content\/uploads\/2021\/09\/vz200_and-RTTY_sm.jpg\" alt=\"\" class=\"wp-image-801\" srcset=\"https:\/\/vk2idl.com\/wp-content\/uploads\/2021\/09\/vz200_and-RTTY_sm.jpg 800w, https:\/\/vk2idl.com\/wp-content\/uploads\/2021\/09\/vz200_and-RTTY_sm-300x127.jpg 300w, https:\/\/vk2idl.com\/wp-content\/uploads\/2021\/09\/vz200_and-RTTY_sm-768x324.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>The VZ200 Glass RTTY Encoder\/Decoder was a software project I created in 1984 during the time I was working for Dick Smith Electronics (DSE). It was a plug-in RTTY module to suit the popular VZ200 and VZ300 computers that were available at the time. I wrote the software at home in my spare time. The modem hardware was designed by Rex Callaghan who at the time worked in R&amp;D at DSE and later became technical director. The project was published in Electronics Today International (ETI) in November\/December 1984 and was sold throughout Australia and New Zealand by DSE as a kit (Part No. K-6318).<\/p>\n\n\n\n<p>The software was written for the Zilog Z80 microprocessor using Microsoft Assembler on a Dick Smith System 80 computer (a clone of the Tandy TRS-80).  The final code was assembled and written to eprom. Sadly I no longer have the original assembler listing but a memory dump of the eprom is provided with the article.<\/p>\n\n\n\n<p><em>Trivia: If you look on the underside of the PCB you will find the word &#8216;RANDI&#8217; which is code for Rex AND Ian.<\/em><\/p>\n\n\n\n<p>The published ETI articles and the supplied Instruction leaflet are available below.<\/p>\n\n\n\n<div class=\"wp-block-file\"><a href=\"http:\/\/vk2idl.com\/wp-content\/uploads\/2021\/09\/ETI-1984-11-November_VZ200_Glass_RTTY_Part1.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">ETI November 1984 &#8211; VZ200 Glass RTTY &#8211; Part 1<\/a><\/div>\n\n\n\n<div class=\"wp-block-file\"><a href=\"http:\/\/vk2idl.com\/wp-content\/uploads\/2021\/09\/ETI-1984-12-December_VZ200_Glass_RTTY_Part2.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"> ETI December 1984 &#8211; VZ200 Glass RTTY &#8211; Part2<\/a><\/div>\n\n\n\n<div class=\"wp-block-file\"><a href=\"http:\/\/vk2idl.com\/wp-content\/uploads\/2021\/09\/VZ200_RTTY_Manual.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">VZ200_RTTY_Manual<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The VZ200 Glass RTTY Encoder\/Decoder was a software project I created in 1984 during the time I was working for Dick Smith Electronics (DSE). It was a plug-in RTTY module to suit the popular VZ200 and VZ300 computers that were available at the time. I wrote the software at home in my spare time. The &hellip;<br \/><a href=\"https:\/\/vk2idl.com\/index.php\/vz200-glass-rtty-encoder-decoder\/\" class=\"more-link pen_button pen_element_default pen_icon_arrow_double\">Continue reading <span class=\"screen-reader-text\">VZ200 Glass RTTY (legacy article)<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-800","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vk2idl.com\/index.php\/wp-json\/wp\/v2\/pages\/800","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vk2idl.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vk2idl.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/vk2idl.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vk2idl.com\/index.php\/wp-json\/wp\/v2\/comments?post=800"}],"version-history":[{"count":7,"href":"https:\/\/vk2idl.com\/index.php\/wp-json\/wp\/v2\/pages\/800\/revisions"}],"predecessor-version":[{"id":932,"href":"https:\/\/vk2idl.com\/index.php\/wp-json\/wp\/v2\/pages\/800\/revisions\/932"}],"wp:attachment":[{"href":"https:\/\/vk2idl.com\/index.php\/wp-json\/wp\/v2\/media?parent=800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}