Can a NTSC Amiga output PAL signal as well?

[Rotareneg]

The A600 and A500 use the same rom, you must be looking at the wrong spot.

[AmigaHope]

Originally Posted by c0dehunter

Additionally:
I opened up my A600, and the KS ROM chip seems *MUCH* smaller than a 1.2/1/3 KS ROM chip, so there is not way that I can fit the 1.2/1.3 chip in there.

Also, on my A600, when I press both buttons upon a reboot, the menu that I get has NO option for PAL/NTSC output. (my Amiga 1200 and 4000T Escom do have this option however).

So all in all my A600 seems like not a good option for outputting PAL/ mimicking an A500+ system in my opinion?

The A500+ shipped with the 2.04 ROM, which is pretty much the same as the 2.05 ROM in the A600. All 2.05 adds is built-in drivers for PCMCIA and IDE. The only rev 8a boards sold with 1.3 ROMs were the neutered NTSC ones that were sold as "A500" rather than "A500+"

The A600 is almost identical to the A500+ as far as software is concerned. It just has extra devices via having Gayle instead of Gary, is missing the numeric keypad, different chip/slow trapdoor slot, and has a composite modulator built-in.

Any software that works on an A500+ will work on an A600, unless it demands the use of the numeric keypad.

The ROM is the big DIP package just below the 68000 CPU. It's dead center in this image:

https://bigbookofamigahardware.com/b...mb_rev15_2.jpg

It is a 42-pin ROM socket which was designed to support 1M ROMs, but the A600 shipped with 40-pin 512k ROMs that leave two of the pins in the socket empty (make SURE to always put it in correctly and not shift it over!)

That ROM will fit into the 40-pin socket on the Rev 6a A500. That is the DIP socket just to the right of the LARGE DIP 68000 on the A500, on the left side of the motherboard next to the big side expansion edge connector. Look in the lower left of this picture, the ROM is the chip labeled "SHARP" since Sharp made the ROM in the picture (but Amiga ROMs were made by a lot of companies so yours won't necessarily say Sharp).

https://bigbookofamigahardware.com/b...mb_rev6a_1.jpg

Also, I confess that I believe I had a brain fart. PAL/NTSC switching was added in ROM 3.x series, not 2.x. It's been so long since I used 2.x that I forgot. =( You can still switch using something like Degrader using the Survive Reset feature.

There is not much reason to use 2.x anyway as it's cheap to get 3.1, and there is no software that works in 2.x that doesn't work in 3.1. 3.1.4 is ideal, as long as you install a mass storage device to hold the libraries that were removed from ROM. (I don't think there's anything that breaks the OS that still uses workbench.library and icon.library)

[Matt_H]

Originally Posted by c0dehunter

So all in all my A600 seems like not a good option for outputting PAL/ mimicking an A500+ system in my opinion?

The bootmenu in Kickstart 2 doesn’t have the PAL/NTSC switch (and Kickstart 1.x doesn’t have a bootmenu at all). The way to switch video modes on these machines is with Degrader.

[Jope]

Originally Posted by Hewitson

Whether you use the RGB port or not is irrelevant. Setting an NTSC Amiga to PAL does NOT cause the machine to output a PAL signal. It's a 60 hz NTSC signal.

It is very relevant for this discussion that the RGB port is used.

There is no NTSC or PAL in the RGB port, as it is RGB! The "NTSC" or "PAL" modes available with an ECS Agnus change the vertical refresh rate between 60Hz and 50Hz, but there will not be any NTSC or PAL encoding down the RGB lines.

Any colour composite output ports in the A1000, A600, A1200, CDTV, CD32 will retain the NTSC or PAL encoding no matter what the refresh rate.