From b2e9d515e2b12ae2912475b94557a512c8926534 Mon Sep 17 00:00:00 2001 From: Trent Huber Date: Tue, 7 Oct 2025 04:24:15 -0400 Subject: [PATCH] Improve raw README.md readability --- README.md | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/README.md b/README.md index f714aae..70b5ea9 100644 --- a/README.md +++ b/README.md @@ -1,15 +1,19 @@ # Tandy Graphics Adapter Controller -This project uses the programmable I/O found on the Raspberry Pi Pico 2 to drive a [CM-5 monitor](https://dfarq.homeip.net/tandy-cm-5-monitor/) using the [Tandy Graphics Adapter display standard](https://en.wikipedia.org/wiki/Tandy_Graphics_Adapter). +This project uses the programmable I/O found on the Raspberry Pi Pico 2 to drive +a [CM-5 monitor](https://dfarq.homeip.net/tandy-cm-5-monitor/) using the +[Tandy Graphics Adapter display standard]( +https://en.wikipedia.org/wiki/Tandy_Graphics_Adapter). -![Here is an image of the Pico 2 hooked up to the monitor.](reference/cm5.jpeg "My current setup") +![A Pico 2 hooked up to my monitor.](reference/cm5.jpeg "My current setup") ## Building -Assuming you have the Raspberry Pi SDK installed with the relevant path variables set up, building the project is as follows. +Assuming you have the Raspberry Pi SDK installed with the relevant path +variables set up, building the project is as follows. ```console -$ git clone https://github.com/trenthuber/rp2350-tga +$ git clone https://trenthuber.com/git/rp2350-tga.git $ cd rp2350-tga $ mkdir build $ cd build @@ -21,4 +25,10 @@ The resulting `tga.uf2` file can be copied to the Pico 2. ## Troubleshooting -Given the lack of [documentation](reference/cm5.pdf) (or, more likely, my lack of understanding it) I can only *assume* the CM-5 monitor operates at a 5V TTL level. This would of course be an issue since the Pico operates at 3.3V and would explain why I was unable to test the code simply by plugging the Pico directly into the monitor. It would seem we need a way of boosting the TTL level of the Pico---perhaps with some special IC---before we're able to test the PIO code. +Given the lack of [documentation](reference/cm5.pdf) (or, more likely, my lack +of understanding it) I can only *assume* the CM-5 monitor operates at a 5V TTL +level. This would of course be an issue since the Pico operates at 3.3V and +would explain why I was unable to test the code simply by plugging the Pico +directly into the monitor. It would seem we need a way of boosting the TTL level +of the Pico---perhaps with some special IC---before we're able to test the PIO +code. -- 2.51.0