Carlos E. R. wrote:
The Friday 2005-11-11 at 20:37 -0500, James Knott wrote:
The original IBM PC was monochrome only with CGA following later.
I don't think that's right. I remember the RF connector-) IIRC, when the IBM PC was first released, only the monochrome card was available. The CGA card came out very shortly after.
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.