From f4d91ea1e95f2ab98a98b3167961ffd1c08f6893 Mon Sep 17 00:00:00 2001 From: Matt Jenkins Date: Wed, 25 Mar 2026 22:52:20 +0000 Subject: [PATCH] Updated README --- README.md | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/README.md b/README.md index ea26173..3de140c 100644 --- a/README.md +++ b/README.md @@ -123,3 +123,8 @@ Postscript The patches do not calculate the checksum for the ROMs. This means you will get the VAXstation failiing at bootup with an error 5?? with `SYS 0000.0002`. Work is going on to rectify this, including reverse engineering of the checksum algorithm and the system test 5 to work out what is needed. Watch this space. + +## Update: + +The ROMs have now been updated with the correct checksums. It turns out the checksum is calculated per physical ROM, +and is a simple rotate-left-and-add method. I wrote a [little program](https://github.com/MajenkoProjects/vaxcheck) to calculate the checksums for me.