From 519f8ad635e462815283c193007bcc298a5b24a8 Mon Sep 17 00:00:00 2001 From: Brion Vibber Date: Wed, 4 Jan 2023 20:57:07 -0800 Subject: [PATCH] whoops --- readme.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/readme.md b/readme.md index f2f84bc..a69c627 100644 --- a/readme.md +++ b/readme.md @@ -19,7 +19,7 @@ Enjoy! I'll probably work on this off and on for the next few weeks until I've g The 16-bit signed integer multiplication seems to be working, though I need to double-check it some more. It takes two 16-bit inputs and emits one 32-bit output in the zero page, using the Atari OS ROM's floating point registers as workspaces. Inputs are clobbered. -The main loop is a basic add-and-shift, using 16-bit adds which requires flipping the sign of negative inputs (otherwise you'd have to add all those sign-extension bits). Runs in 480-780 cycles depending on input. +The main loop is a basic add-and-shift, using 16-bit adds which requires flipping the sign of negative inputs (otherwise you'd have to add all those sign-extension bits). Runs in 470-780 cycles depending on input. The mandelbrot loop is partly sketched out but I have future updates to make on that.