Replacing Self Test in XEGS ROM

[+mytek]

On 7/15/2020 at 4:15 AM, HiassofT said:

I had a quick go at it and added options to only verify and fix 16k XL/XE OS ROM checksums to my patchrom tool. I've attached a win32 console executable.

Thanks Hias .

 

The new version of your patchrom program did the trick for me.

 

Here's a stock XEGS ROM that has had the Self Test routines replaced with the 1200XL RAINBOW screen, has HiSpeed OS routines incorporated, and has an updated checksum.

 

XEGS_RAINBOW_HiPatch.rom

 

This is still a 32Kbyte ROM image, so will work in a stock XEGS system.

 

[+mytek]

I used option -k to leave out the keyboard IRQ routines in that XEGS ROM image I just posted. Was wondering what impact it would have if I had let them get patched? Do you lose compatibility with any applications by doing so?

 

[HiassofT]

-k disables hotkey support - I usually have that enabled. Especially SHIFT+CONTROL+S is quite handy if some program trampled over the stack area or if you later power up/enable another drive. So far no one reported compatibility issues with hotkey support enabled.

 

* hotkeys:

The keyboard IRQ routine of the OS is patched and you can control
the SIO patch using various keystrokes:

SHIFT+CONTROL+S    Clear SIO speed table and enable highspeed SIO
SHIFT+CONTROL+N    Disable highspeed SIO (normal speed)
SHIFT+CONTROL+H    Enable highspeed SIO
SHIFT+CONTROL+DEL  Coldstart Atari

 

so long,

 

Hias