From 1627f393b7bfc17264bb0985d2e640f807021e71 Mon Sep 17 00:00:00 2001 From: ken rector Date: Sun, 21 Aug 2022 10:52:03 -0700 Subject: [PATCH] Update README.md --- README.md | 3 +++ 1 file changed, 3 insertions(+) diff --git a/README.md b/README.md index 129400e..1bfa5fd 100644 --- a/README.md +++ b/README.md @@ -6,3 +6,6 @@ This repository includes a bootable PO tape and a sigma.ini file that can be use The PO tape and cpcpdoc.txt files were provided by Keith G. Calkins from his archive of CP-V material at https://www.andrews.edu/~calkins/sigma/. The cpcpdoc.txt file is a description of booting CP-V using siggy, a dos based simulator written by Keith and George Plume in th 90's. This may help someone new to CP-V to get started. + +Note: +The CP-V operator interface was activated by the INTERRUPT button on the sigma front panel. The Interrupt button is simulated in simh by entering the code 0x10 in the consle window. On a Mac I installed the Unicode Hex Input keyboard and typed ALT-0010 to enter the 0x10 character.