From 9c776c908a4aeb01f5d1dffdf814f03f509a6836 Mon Sep 17 00:00:00 2001 From: Aaron Taylor Date: Mon, 28 Dec 2020 01:17:20 -0800 Subject: [PATCH] Added a page to the website for KDJ11 tips. --- .../pdp-11/references/kdj11_tips.md | 22 +++++++++++++++++++ .../pdp-11/references/kdj11_tips.metadata | 6 +++++ 2 files changed, 28 insertions(+) create mode 100644 data/development/pdp-11/references/kdj11_tips.md create mode 100644 data/development/pdp-11/references/kdj11_tips.metadata diff --git a/data/development/pdp-11/references/kdj11_tips.md b/data/development/pdp-11/references/kdj11_tips.md new file mode 100644 index 0000000..fe3164e --- /dev/null +++ b/data/development/pdp-11/references/kdj11_tips.md @@ -0,0 +1,22 @@ +# Overview # + +A collection of tips for working with KDJ11 CPU boards. + +# Failed Tests # + +The KDJ11-B includes a variety of diagnostics in ROM that run on boot. When a +test fails, there is a hidden option to bypass the test and continue. Simply +press `Ctrl-O` (the letter, not the number zero), then `4`, then `ENTER`. This +will continue on, halting at the next failed test or at the boot menu. + +# J11 ODT & Cache # + +When a KDJ11 with cache powers up, the cache is enabled by default, even in +ODT mode. Thus, even if a memory location is faulty, writing and reading to +that location will appear to succeed. + +The cache may be bypassed by setting bit nine of the Cache Control Register +(CCR) located at `017777746`. In ODT: + + 17777746/ 01000 + diff --git a/data/development/pdp-11/references/kdj11_tips.metadata b/data/development/pdp-11/references/kdj11_tips.metadata new file mode 100644 index 0000000..7b2ad61 --- /dev/null +++ b/data/development/pdp-11/references/kdj11_tips.metadata @@ -0,0 +1,6 @@ +[DEFAULT] +page_title = DEC KDJ11 Tips and Tricks +meta_keywords = +meta_description = +menu_text = KDJ11 Tips +menu_priority = -- 2.20.1