-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The Sunday 2005-11-13 at 08:54 -0500, James Knott wrote:
I don't know when they were comercialized, but I just dug out the "Technical Reference" book of the IBM PC, first edition (Revised January 1983) and it documents both interfaces:
IBM Monochrome Display and Parallel Printer Adapter 2-47 ... Color/Graphics Adapter 2-55
They were different cards.
The "PC" was announced in August 1981 and went on sale in October. By 1983, the XT would have been available, IIRC.
Even if that were so, which I don't know (after all, I don't/didn't live in the USA), that book was published by IBM that year and was for the PC only, no mention of the XT at all. And it documents the CGA card. And it is a reprint, thus there was an earlier print date. That documentation had much to do with the PC boom, it facilitated making cards, adaptors, clones, and software. - -- Cheers, Carlos Robinson -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) Comment: Made with pgp4pine 1.76 iD8DBQFDd1s5tTMYHG2NR9URAgE7AJwPGvz5G/kZKssc5WzwU0KxQ1EmVwCgjSLs hPc7bWsHBmrouz5of3uRg6g= =GmKq -----END PGP SIGNATURE-----