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Old dos games cga11/29/2022 ![]() ![]() Please forgive the crude photos - I usually use a DOS screen grabber called Snarf-It, but it fails to work with my Hercules card. HGCIBM v2.02 - Athena Digital, Gary Batson (1987).HGCIBM v1.11 - Athena Digital, Gary Batson (1986).CGA - Colour Graphics Emulator by Stephen Jones ().This article looks at the following CGA simulators and reviews their good and bad points when used with 18 games that do not support Hercules but do support CGA: Examples of this are Railroad Tycoon, Indianapolis 500 and Boulder Dash. Some games would directly try to write to and read from the CGA graphics memory location which doesn't exist on a Hercules card, so these titles would either exit you out to DOS with a friendly message, or crash. ![]() So CGA simulators, basically small DOS utilities, were written to overcome this, allowing the many HGC owners out there to still buy and play CGA-compatible software. If you grew up with an Amstrad CPC464 and your parents only got the monochrome (green) monitor option or you had an Amstrad PCW Word Processor, you'll be right at home here -) Typically these would be 4 colours at 640x200 or 320x200 resolution. It supports only 2 brightness levels and blinking, so all graphics needed to be dithered to try to show different shades.īecause of this, and despite its very low resolution, CGA was about the lowest quality standard games developers wrote their games to support. But this excellent high resolution had a trade off - colour (or lack of). This was important, as the Hercules (HGC) graphics standard was really designed for high readability in text mode with its 720x348 resolution. CGA Simulators for Hercules Cards What is a CGA Simulator?Ī CGA Simulator was a program you ran that allowed you to run CGA games, that is, games that were designed to be playable with an IBM Color Graphics Adapter, even if you only had a Hercules monochrome graphics card. ![]()
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