{"id":1840,"date":"2017-04-17T12:43:15","date_gmt":"2017-04-17T12:43:15","guid":{"rendered":"http:\/\/avitech.com.au\/?page_id=1840"},"modified":"2017-04-17T12:56:39","modified_gmt":"2017-04-17T12:56:39","slug":"konan-blue-sky-mfm-controller","status":"publish","type":"page","link":"https:\/\/avitech.com.au\/?page_id=1840","title":{"rendered":"Konan Blue Sky MFM Controller"},"content":{"rendered":"<p>I have a &#8220;Blue Sky&#8221; Konan MFM controller board in an SD Systems S-100 machine.<\/p>\n<p>The MFM hardware consists of:<\/p>\n<ul>\n<li>&#8220;Blue Sky&#8221; single-sided PCB, plugged in to the Z-80 socket on the SBC-200 CPU board<\/li>\n<li>A Konan external PCB fitted with a large &#8220;Konan&#8221; branded LSI chip<\/li>\n<li>Disctron D-507 5MB MFM hard drive<\/li>\n<\/ul>\n<p>I&#8217;m keen to get this system running, but I have no documentation for it.<\/p>\n<p>If you have any manuals or software for this controller, please let me know.<\/p>\n<p>Below are photos of the various components.<\/p>\n<div data-carousel-extra='{&quot;blog_id&quot;:1,&quot;permalink&quot;:&quot;https:\/\/avitech.com.au\/?page_id=1840&quot;}' id='gallery-1' class='gallery galleryid-1840 gallery-columns-4 gallery-size-thumbnail'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1853'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142539_1492406887735_resized-e1492432436254.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142539_1492406887735_resized-e1492432436254.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142539_1492406887735_resized-e1492432436254.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, 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https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_141541_1492406933176_resized.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1842\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1842\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_141541_1492406933176_resized.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170417_141541_1492406933176_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_141541_1492406933176_resized.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1841'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_141535_1492406934208_resized.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_141535_1492406934208_resized.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_141535_1492406934208_resized.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_141535_1492406934208_resized.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1841\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1841\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_141535_1492406934208_resized.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" 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srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142207_1492406924313_resized.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142207_1492406924313_resized.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142207_1492406924313_resized.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1850\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1850\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142207_1492406924313_resized.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170417_142207_1492406924313_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142207_1492406924313_resized.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1849'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142121_1492406925051_resized.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142121_1492406925051_resized.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142121_1492406925051_resized.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142121_1492406925051_resized.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1849\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1849\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142121_1492406925051_resized.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170417_142121_1492406925051_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170417_142121_1492406925051_resized.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p>I have some significant hurdles to overcome, if I am to get this going, including:<\/p>\n<ul>\n<li>The Disctron D-507 does not spin up<\/li>\n<li>I have disassembled the PROM BIOS that was in the SBC-220 when I received it (there was only one 2708 installed, at F000-F7FF). The assembly listing shows that it is looking for the MFM controller at address H&#8217;EF, but it is physically wired to respond to addresses H&#8217;74 to H&#8217;77<\/li>\n<li>I have no software to formatted the hard drive, and no modified CP\/M files (such as a CBIOS) to support it<\/li>\n<\/ul>\n<p>This page last updated: 17 April 2017.<\/p>\n<h4>Feedback form<\/h4>\n<div data-test='contact-form'\n\t\t\tid='contact-form-1840'\n\t\t\tclass='jetpack-contact-form-container '\n\t\t\tdata-wp-interactive='jetpack\/form' 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role=\"button\" tabindex=\"0\" data-wp-on--click=\"actions.goBack\" href=\"\/index.php?rest_route=%2Fwp%2Fv2%2Fpages%2F1840\">\u2190 Back<\/a><\/p><h4 data-wp-bind--aria-hidden=\"state.isSuccessMessageAriaHidden\" id=\"contact-form-success-header-59067b5a294505d788e8e9bf3025e909d9de80e5\">Thank you for your response. \u2728<\/h4>\n\n<template data-wp-each--submission=\"context.formattedSubmissionData\">\n\t\t\t\t\t<div class=\"jetpack_forms_contact-form-success-summary\">\n\t\t\t\t\t\t<div class=\"field-name-wrapper\">\n\t\t\t\t\t\t\t<div class=\"field-type-icon\" data-wp-watch=\"callbacks.watchFieldTypeIcon\"><\/div>\n\t\t\t\t\t\t\t<div class=\"field-name\" data-wp-text=\"context.submission.label\" data-wp-bind--hidden=\"!context.submission.label\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"field-value\" data-wp-text=\"context.submission.value\" data-wp-bind--hidden=\"!context.submission.showPlainValue\"><\/div>\n\t\t\t\t\t\t<a class=\"field-url\" 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\/>\n<input type='hidden' name='jetpack_form_fill_duration' value='' \/>\n\n<div style=\"\"  data-wp-interactive=\"jetpack\/form\" data-wp-context='{\"fieldId\":\"g1840-name\",\"fieldType\":\"name\",\"fieldLabel\":\"Name\",\"fieldValue\":\"\",\"fieldPlaceholder\":\"\",\"fieldIsRequired\":\"1\",\"fieldErrorMessage\":\"\",\"fieldExtra\":[],\"formHash\":\"59067b5a294505d788e8e9bf3025e909d9de80e5\"}'  class='grunion-field-name-wrap grunion-field-wrap'  data-jp-field-id='g1840-name' data-jp-visibility-root='g1840-name' data-wp-class--jetpack-field--conditionally-hidden=\"state.isFieldHidden\" data-wp-watch--conditional-focus=\"callbacks.manageConditionalFocus\" data-wp-init='callbacks.initializeField' data-wp-on--jetpack-form-reset='callbacks.initializeField' >\n<label\n\t\t\t\tfor='g1840-name' class=\"grunion-field-label name\" >Name<span class=\"grunion-label-required\" aria-hidden=\"true\">(required)<\/span><\/label>\n<input\n\t\t\t\t\ttype='text'\n\t\t\t\t\tname='g1840-name'\n\t\t\t\t\tid='g1840-name'\n\t\t\t\t\tvalue=''\n\n\t\t\t\t\tdata-wp-bind--aria-invalid='state.fieldAriaInvalid'\n\t\t\t\t\tdata-wp-bind--value='state.getFieldValue'\n\t\t\t\t\taria-describedby='g1840-name-text-error-message'\n\t\t\t\t\tdata-wp-on--input='actions.onFieldChange'\n\t\t\t\t\tdata-wp-on--blur='actions.onFieldBlur'\n\t\t\t\t\tdata-wp-class--has-value='state.hasFieldValue'\n\n\t\t\t\t\tclass='name  grunion-field' \n\t\t\t\t\trequired='true' aria-required='true'  \/>\n \n\t\t\t<div id=\"g1840-name-text-error\" class=\"contact-form__input-error\" data-wp-class--has-errors=\"state.fieldHasErrors\">\n\t\t\t\t<span class=\"contact-form__warning-icon\" aria-hidden=\"true\">\n\t\t\t\t\t<svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n\t\t\t\t\t\t<path d=\"M8.50015 11.6402H7.50015V10.6402H8.50015V11.6402Z\" \/>\n\t\t\t\t\t\t<path d=\"M7.50015 9.64018H8.50015V6.30684H7.50015V9.64018Z\" \/>\n\t\t\t\t\t\t<path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M6.98331 3.0947C7.42933 2.30177 8.57096 2.30177 9.01698 3.09469L13.8771 11.7349C14.3145 12.5126 13.7525 13.4735 12.8602 13.4735H3.14004C2.24774 13.4735 1.68575 12.5126 2.12321 11.7349L6.98331 3.0947ZM8.14541 3.58496C8.08169 3.47168 7.9186 3.47168 7.85488 3.58496L2.99478 12.2251C2.93229 12.3362 3.01257 12.4735 3.14004 12.4735H12.8602C12.9877 12.4735 13.068 12.3362 13.0055 12.2251L8.14541 3.58496Z\" \/>\n\t\t\t\t\t<\/svg>\n\t\t\t\t<\/span>\n\t\t\t\t<span data-wp-text=\"state.errorMessage\" id=\"g1840-name-text-error-message\"><\/span>\n\t\t\t<\/div> \n\t<\/div>\n\n<div style=\"\"  data-wp-interactive=\"jetpack\/form\" data-wp-context='{\"fieldId\":\"g1840-email\",\"fieldType\":\"email\",\"fieldLabel\":\"Email\",\"fieldValue\":\"\",\"fieldPlaceholder\":\"\",\"fieldIsRequired\":\"1\",\"fieldErrorMessage\":\"\",\"fieldExtra\":[],\"formHash\":\"59067b5a294505d788e8e9bf3025e909d9de80e5\"}'  class='grunion-field-email-wrap grunion-field-wrap'  data-jp-field-id='g1840-email' data-jp-visibility-root='g1840-email' data-wp-class--jetpack-field--conditionally-hidden=\"state.isFieldHidden\" data-wp-watch--conditional-focus=\"callbacks.manageConditionalFocus\" data-wp-init='callbacks.initializeField' data-wp-on--jetpack-form-reset='callbacks.initializeField' >\n<label\n\t\t\t\tfor='g1840-email' class=\"grunion-field-label email\" >Email<span class=\"grunion-label-required\" aria-hidden=\"true\">(required)<\/span><\/label>\n<input\n\t\t\t\t\ttype='email'\n\t\t\t\t\tname='g1840-email'\n\t\t\t\t\tid='g1840-email'\n\t\t\t\t\tvalue=''\n\n\t\t\t\t\tdata-wp-bind--aria-invalid='state.fieldAriaInvalid'\n\t\t\t\t\tdata-wp-bind--value='state.getFieldValue'\n\t\t\t\t\taria-describedby='g1840-email-email-error-message'\n\t\t\t\t\tdata-wp-on--input='actions.onFieldChange'\n\t\t\t\t\tdata-wp-on--blur='actions.onFieldBlur'\n\t\t\t\t\tdata-wp-class--has-value='state.hasFieldValue'\n\n\t\t\t\t\tclass='email  grunion-field' \n\t\t\t\t\trequired='true' aria-required='true'  \/>\n \n\t\t\t<div id=\"g1840-email-email-error\" class=\"contact-form__input-error\" data-wp-class--has-errors=\"state.fieldHasErrors\">\n\t\t\t\t<span class=\"contact-form__warning-icon\" aria-hidden=\"true\">\n\t\t\t\t\t<svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n\t\t\t\t\t\t<path d=\"M8.50015 11.6402H7.50015V10.6402H8.50015V11.6402Z\" \/>\n\t\t\t\t\t\t<path d=\"M7.50015 9.64018H8.50015V6.30684H7.50015V9.64018Z\" \/>\n\t\t\t\t\t\t<path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M6.98331 3.0947C7.42933 2.30177 8.57096 2.30177 9.01698 3.09469L13.8771 11.7349C14.3145 12.5126 13.7525 13.4735 12.8602 13.4735H3.14004C2.24774 13.4735 1.68575 12.5126 2.12321 11.7349L6.98331 3.0947ZM8.14541 3.58496C8.08169 3.47168 7.9186 3.47168 7.85488 3.58496L2.99478 12.2251C2.93229 12.3362 3.01257 12.4735 3.14004 12.4735H12.8602C12.9877 12.4735 13.068 12.3362 13.0055 12.2251L8.14541 3.58496Z\" \/>\n\t\t\t\t\t<\/svg>\n\t\t\t\t<\/span>\n\t\t\t\t<span data-wp-text=\"state.errorMessage\" id=\"g1840-email-email-error-message\"><\/span>\n\t\t\t<\/div> \n\t<\/div>\n\n<div style=\"\"  data-wp-interactive=\"jetpack\/form\" data-wp-context='{\"fieldId\":\"g1840-website\",\"fieldType\":\"url\",\"fieldLabel\":\"Website\",\"fieldValue\":\"\",\"fieldPlaceholder\":\"\",\"fieldIsRequired\":\"\",\"fieldErrorMessage\":\"\",\"fieldExtra\":[],\"formHash\":\"59067b5a294505d788e8e9bf3025e909d9de80e5\"}'  class='grunion-field-url-wrap grunion-field-wrap'  data-jp-field-id='g1840-website' data-jp-visibility-root='g1840-website' data-wp-class--jetpack-field--conditionally-hidden=\"state.isFieldHidden\" data-wp-watch--conditional-focus=\"callbacks.manageConditionalFocus\" data-wp-init='callbacks.initializeField' data-wp-on--jetpack-form-reset='callbacks.initializeField' >\n<label\n\t\t\t\tfor='g1840-website' class=\"grunion-field-label url\" >Website<\/label>\n<input\n\t\t\t\t\ttype='text'\n\t\t\t\t\tname='g1840-website'\n\t\t\t\t\tid='g1840-website'\n\t\t\t\t\tvalue=''\n\n\t\t\t\t\tdata-wp-bind--aria-invalid='state.fieldAriaInvalid'\n\t\t\t\t\tdata-wp-bind--value='state.getFieldValue'\n\t\t\t\t\taria-describedby='g1840-website-text-error-message'\n\t\t\t\t\tdata-wp-on--input='actions.onFieldChange'\n\t\t\t\t\tdata-wp-on--blur='actions.onFieldBlur'\n\t\t\t\t\tdata-wp-class--has-value='state.hasFieldValue'\n\n\t\t\t\t\tclass='url  grunion-field' \n\t\t\t\t\t \/>\n \n\t\t\t<div id=\"g1840-website-text-error\" class=\"contact-form__input-error\" data-wp-class--has-errors=\"state.fieldHasErrors\">\n\t\t\t\t<span class=\"contact-form__warning-icon\" aria-hidden=\"true\">\n\t\t\t\t\t<svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n\t\t\t\t\t\t<path d=\"M8.50015 11.6402H7.50015V10.6402H8.50015V11.6402Z\" \/>\n\t\t\t\t\t\t<path d=\"M7.50015 9.64018H8.50015V6.30684H7.50015V9.64018Z\" \/>\n\t\t\t\t\t\t<path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M6.98331 3.0947C7.42933 2.30177 8.57096 2.30177 9.01698 3.09469L13.8771 11.7349C14.3145 12.5126 13.7525 13.4735 12.8602 13.4735H3.14004C2.24774 13.4735 1.68575 12.5126 2.12321 11.7349L6.98331 3.0947ZM8.14541 3.58496C8.08169 3.47168 7.9186 3.47168 7.85488 3.58496L2.99478 12.2251C2.93229 12.3362 3.01257 12.4735 3.14004 12.4735H12.8602C12.9877 12.4735 13.068 12.3362 13.0055 12.2251L8.14541 3.58496Z\" \/>\n\t\t\t\t\t<\/svg>\n\t\t\t\t<\/span>\n\t\t\t\t<span data-wp-text=\"state.errorMessage\" id=\"g1840-website-text-error-message\"><\/span>\n\t\t\t<\/div> \n\t<\/div>\n\n<div style=\"\"  data-wp-interactive=\"jetpack\/form\" data-wp-context='{\"fieldId\":\"g1840-comment\",\"fieldType\":\"textarea\",\"fieldLabel\":\"Comment\",\"fieldValue\":\"\",\"fieldPlaceholder\":\"\",\"fieldIsRequired\":\"1\",\"fieldErrorMessage\":\"\",\"fieldExtra\":[],\"formHash\":\"59067b5a294505d788e8e9bf3025e909d9de80e5\"}'  class='grunion-field-textarea-wrap grunion-field-wrap'  data-jp-field-id='g1840-comment' data-jp-visibility-root='g1840-comment' data-wp-class--jetpack-field--conditionally-hidden=\"state.isFieldHidden\" data-wp-watch--conditional-focus=\"callbacks.manageConditionalFocus\" data-wp-init='callbacks.initializeField' data-wp-on--jetpack-form-reset='callbacks.initializeField' >\n<label\n\t\t\t\tfor='contact-form-comment-g1840-comment' class=\"grunion-field-label textarea\" >Comment<span class=\"grunion-label-required\" aria-hidden=\"true\">(required)<\/span><\/label>\n<textarea\n\t\t                style=''\n\t\t                name='g1840-comment'\n\t\t                id='contact-form-comment-g1840-comment'\n\t\t                rows='20'\n\t\t\t\t\t\tdata-wp-text='state.getFieldValue'\n\t\t\t\t\t\tdata-wp-on--input='actions.onFieldChange'\n\t\t\t\t\t\tdata-wp-on--blur='actions.onFieldBlur'\n\t\t\t\t\t\tdata-wp-class--has-value='state.hasFieldValue'\n\t\t\t\t\t\taria-describedby='g1840-comment-textarea-error-message'\n\t\t\t\t\t\tdata-wp-bind--aria-invalid='state.fieldAriaInvalid'\n\t\t\t\t\t\tclass='textarea  grunion-field'  required aria-required='true'><\/textarea>\n \n\t\t\t<div id=\"g1840-comment-textarea-error\" class=\"contact-form__input-error\" data-wp-class--has-errors=\"state.fieldHasErrors\">\n\t\t\t\t<span class=\"contact-form__warning-icon\" aria-hidden=\"true\">\n\t\t\t\t\t<svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n\t\t\t\t\t\t<path d=\"M8.50015 11.6402H7.50015V10.6402H8.50015V11.6402Z\" \/>\n\t\t\t\t\t\t<path d=\"M7.50015 9.64018H8.50015V6.30684H7.50015V9.64018Z\" \/>\n\t\t\t\t\t\t<path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M6.98331 3.0947C7.42933 2.30177 8.57096 2.30177 9.01698 3.09469L13.8771 11.7349C14.3145 12.5126 13.7525 13.4735 12.8602 13.4735H3.14004C2.24774 13.4735 1.68575 12.5126 2.12321 11.7349L6.98331 3.0947ZM8.14541 3.58496C8.08169 3.47168 7.9186 3.47168 7.85488 3.58496L2.99478 12.2251C2.93229 12.3362 3.01257 12.4735 3.14004 12.4735H12.8602C12.9877 12.4735 13.068 12.3362 13.0055 12.2251L8.14541 3.58496Z\" \/>\n\t\t\t\t\t<\/svg>\n\t\t\t\t<\/span>\n\t\t\t\t<span data-wp-text=\"state.errorMessage\" id=\"g1840-comment-textarea-error-message\"><\/span>\n\t\t\t<\/div>\n\t<\/div>\n\t<p class='contact-submit'>\n<div class=\"contact-form__error\" data-wp-class--show-errors=\"state.showFormErrors\"><span class=\"contact-form__warning-icon\" aria-hidden=\"true\"><i><\/i><\/span><span class=\"contact-form__error-message\" tabindex=\"-1\" data-wp-watch=\"callbacks.focusOnValidationError\" data-wp-text=\"state.getFormErrorMessage\"><\/span><ul aria-label=\"Form errors\">\n\t\t\t\t<template data-wp-each=\"state.getErrorList\" data-wp-key=\"context.item.id\">\n\t\t\t\t\t<li><a data-wp-bind--href=\"context.item.anchor\" data-wp-on--click=\"actions.scrollIntoView\" data-wp-text=\"context.item.label\"><\/a><\/li>\n\t\t\t\t<\/template>\n\t\t\t\t<\/ul><\/div><div class=\"contact-form__error\" data-wp-class--show-errors=\"state.showSubmissionError\" data-wp-text=\"context.submissionError\" tabindex=\"-1\" data-wp-watch=\"callbacks.focusOnSubmissionError\"><\/div>\t\t<button type='submit' class='pushbutton-wide'>Submit<\/button>\t\t<input type='hidden' name='contact-form-id' value='1840' \/>\n\t\t<input type='hidden' name='action' value='grunion-contact-form' \/>\n\t\t<input type='hidden' name='contact-form-hash' value='59067b5a294505d788e8e9bf3025e909d9de80e5' \/>\n\t<\/p>\n<p style=\"display: none !important;\" class=\"akismet-fields-container\" data-prefix=\"ak_\"><label>&#916;<textarea name=\"ak_hp_textarea\" cols=\"45\" rows=\"8\" maxlength=\"100\"><\/textarea><\/label><input type=\"hidden\" id=\"ak_js_1\" name=\"ak_js\" value=\"150\"\/><script>\ndocument.getElementById( \"ak_js_1\" ).setAttribute( \"value\", ( new Date() ).getTime() );\n<\/script>\n<\/p><\/form>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>I have a &#8220;Blue Sky&#8221; Konan MFM controller board in an SD Systems S-100 machine. The MFM hardware consists of: &#8220;Blue Sky&#8221; single-sided PCB, plugged in to the Z-80 socket on the SBC-200 CPU board A Konan external PCB fitted with a large &#8220;Konan&#8221; branded LSI chip Disctron D-507 5MB MFM hard drive I&#8217;m keen ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/avitech.com.au\/?page_id=1840\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1840","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P7xTsk-tG","jetpack-related-posts":[{"id":1524,"url":"https:\/\/avitech.com.au\/?page_id=1524","url_meta":{"origin":1840,"position":0},"title":"MFM Hard Drive on Pentium II PC","author":"malcolm","date":"7-January-2017","format":false,"excerpt":"The \"older\" PCs that I have laying around in the workshop all tend to be Pentium II era machines or later. Unfortunately I don't have much in the way of working 8086, 286, 386 or 486 PCs. The Pentium 2 machines work just fine for me for almost all of\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/drive-and-controller-cropped-300x215.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1727,"url":"https:\/\/avitech.com.au\/?page_id=1727","url_meta":{"origin":1840,"position":1},"title":"SD Systems SBC-200 S-100 Board","author":"malcolm","date":"21-March-2017","format":false,"excerpt":"Where did this come from? This board is part of an SD Systems 600 computer that I am attempting to restore. The 600 (which I will write about in more detail on a separate page) is an \"all in one\" S-100 system that includes an S-100 backplane, various S-100 boards\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2060,"url":"https:\/\/avitech.com.au\/?page_id=2060","url_meta":{"origin":1840,"position":2},"title":"MFM Hard Drives","author":"malcolm","date":"8-June-2017","format":false,"excerpt":"This page is a collection of notes regarding MFM hard drives. Drive-Select Jumper Settings When using an MFM drive on my RQDX Breakout Board, install link DS1 on the MFM drive. When using an MFM drive in a DEC BA23 chassis, install link DS3 on the MFM drive (if you\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2402,"url":"https:\/\/avitech.com.au\/?page_id=2402","url_meta":{"origin":1840,"position":3},"title":"RQDX Mini-BOB for floppy drives","author":"malcolm","date":"27-July-2017","format":false,"excerpt":"This simple PCB will enable one or two 3.5\" or 5.25\" floppy drives to be directly connected to a PDP-11 RQDX-series controller. It is a simplified version of my earlier RQDX Breakout Board. Unlike my earlier board, this board will not connect to an MFM hard drive, and does not\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/07\/populated-pcb-1024-440-300x129.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1552,"url":"https:\/\/avitech.com.au\/?page_id=1552","url_meta":{"origin":1840,"position":4},"title":"VAXmate","author":"malcolm","date":"8-January-2017","format":false,"excerpt":"The VAXmate is an IBM PC\/AT compatible personal computer produced by DEC. Its claim to fame is that it is the world's first commercially produced diskless (ie net-booting) personal computer, as discussed on on the VAXmate's Wikipedia and Microsoft webpages. But it can also be used as a standalone conventional\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170108_192644_1483864602434_resized-1.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170108_192644_1483864602434_resized-1.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170108_192644_1483864602434_resized-1.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170108_192644_1483864602434_resized-1.jpg?resize=700%2C400 2x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170108_192644_1483864602434_resized-1.jpg?resize=1050%2C600 3x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170108_192644_1483864602434_resized-1.jpg?resize=1400%2C800 4x"},"classes":[]},{"id":645,"url":"https:\/\/avitech.com.au\/?page_id=645","url_meta":{"origin":1840,"position":5},"title":"RQDX Breakout Board","author":"malcolm","date":"28-June-2016","format":false,"excerpt":"Quick Links Feel free to click on one of the links in this section to jump to the material you are looking for: Introduction \u00a0 Quickstart Guide \u00a0 Floppy Drives \u00a0 Hard Drives \u00a0 Miscellaneous \u00a0 Downloads \u00a0 Table of Contents \u00a0 Contact Details Introduction DEC made a series of\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"rqdx3-cropped","src":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/06\/rqdx3-cropped-300x175.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/pages\/1840","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/avitech.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1840"}],"version-history":[{"count":5,"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/pages\/1840\/revisions"}],"predecessor-version":[{"id":1862,"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/pages\/1840\/revisions\/1862"}],"wp:attachment":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}