Jump to content
Sign in to follow this  
hueyjones70

800XL PAL

Recommended Posts

I recently bought a non-working 800XL. The non-working was caused by bad memory chips. It turned out to be a PAL version. I only get black and white on my monitor even when I use composite for chroma. I haven't hooked up the chroma line yet. Will it give me color? What differences will exist between the PAL and a NTSC computer during normal use.

Share this post


Link to post
Share on other sites

All games that rely on vertical blank interrupts for timing will appear to run about 13% slower on PAL compared to NTSC. (50 vs 60 hz)

 

But PAL machines can run a lot more of the hardware intensive demos that primarily originate from programmers with PAL hardware that don't, or barely work on NTSC timing.

Share this post


Link to post
Share on other sites

Hello. Do you have the chroma pin hooked up in the 800xl ?

 

This sounds normal though. Using chroma/luma might fix it as it has for some folks.

 

Not for me though, I hooked up my NTSC 800 to my PAL 1084 via Y/C, and I get the same back and white image. So I gave up and bought a PVM.

Share this post


Link to post
Share on other sites

chroma on the PAL 800xl is not connected, there is a mod you can do to sort it tho. Here is a guide to make SVideo work that refers to it:

 

It would all depend on your MoBo revision. In general terms, all you need to do is:

1. REMOVE C56 capacitor (if present). This will dramatically improve sharpness and "edge"-definition.
2. Lift C54 right-hand side, preferably by inserting an on-off switch (if you want to preserve composite out). This will almost COMPLETELY remove vertical banding (present on Luminance-Y signal).
3. Solder Chroma-signal wire from R67/R68 junction, to chroma pin in video port. This will enable the missing chroma-signal on the 800XL (the majority DO NOT have it enabled). No need for pick-up resistor (of any kind).

THAT'S IT.

Share this post


Link to post
Share on other sites

or you could build the NTSC section in and swap the crystal.... then install the dual ANTIX mod etc etc.

 

AntiX and Sophia and you're in heaven ;)

Share this post


Link to post
Share on other sites

I hooked up the chroma circuit and I still only get black and white.

 

This is normal behavior for a PAL machine connected to NTSC

  • Like 1

Share this post


Link to post
Share on other sites

I hooked up the chroma circuit and I still only get black and white.

I suppose your TV set does not have PAL decoding built into it then (strange, as I was under the impression that until recently pretty much all of the modern TV sets come with a triple-standard video input decoder (NTSC, PAL, SECAM), as here in Europe they all had one, e.g.: https://www.displayspecifications.com/en/model/6a3a15bd

Share this post


Link to post
Share on other sites

I was using an old Magnavox monitor, yesterday I tried it on a newer flat screen TV and I have color. I think I will install a UAV on it.

Share this post


Link to post
Share on other sites

I was using an old Magnavox monitor, yesterday I tried it on a newer flat screen TV and I have color. I think I will install a UAV on it.

Your flat screen is probably PAL compatible. Most Newer LCD TVs are while almost all crt s are not PAL compatible.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...