ergo@netcom.UUCP (Isaac Rabinovitch) (10/09/90)
In <106704@convex.convex.com> harper@convex.com (David Harper) writes: >In article <1990Sep28.145044.26732@ariel.unm.edu> jharper@draco.unm.edu (JT) writes: >>I hope I'm not asking this in vain. I'm looking for a CGA emulation package, >>preferably Public Domain, that will work with a EGA card set in Monochrome >>mode. >I don't know if these will work but they are some other emulation programs >that are available on SIMTEL: (list of Hercules CGA emulators deleted) Hercules is quite different from EGA. Not only are the two kinds of software different, they're quite likely to destroy the monitor if run on the wrong hardware, especially if the hardware is Hercules. The only exceptions are C/E/VGA cards specifically designed to emulate Hercules. Perhaps you could use CGA software running under a software CGA emulator running under a hardware Hercules emulator running under EGA, but it's not an experiment I'd care to try! I thought EGA and VGA were upward-compatible with CGA. Since the collapse in hardware prices is motivating me to abandon Hercules for VGA (even Hercules is abandoning Hercules!), I'd appreciate anybody who can correct me on this. -- ergo@netcom.uucp Isaac Rabinovitch {apple,amdahl,claris}!netcom!ergo Silicon Valley, CA
ho@hoss.unl.edu (Tiny Bubbles...) (10/09/90)
In <14417@netcom.UUCP> ergo@netcom.UUCP (Isaac Rabinovitch) writes: >>In article <1990Sep28.145044.26732@ariel.unm.edu> jharper@draco.unm.edu (JT) writes: >>>I hope I'm not asking this in vain. I'm looking for a CGA emulation package, >>>preferably Public Domain, that will work with a EGA card set in Monochrome >>>mode. >Hercules is quite different from EGA. Not only are the two kinds of >software different, they're quite likely to destroy the monitor if run >on the wrong hardware, especially if the hardware is Hercules. The >only exceptions are C/E/VGA cards specifically designed to emulate >Hercules. Hmmm... when I advised some time back to try HGCIBM, that was based on the setup I had: a Paradise EGA card with a monochrome monitor attached. It is entirely possible that other cards don't emulate the Hercules standard in monochrome mode, but I hadn't personally seen them -- I was working from my own experience. My new VGA card also emulates Hercules (but, again, it's using the Paradise chipset). There exists an "EGA Monochrome" mode, 640x350 in two colors (counting black :-{ ), but I haven't ever seen a program that uses it other than .GIF file viewers. Everything else seems to ask for Hercules. >I thought EGA and VGA were upward-compatible with CGA. In color mode. In monochrome mode, an auto-sensing EGA card will prohibit the video mode from being changed into any color mode, including CGA -- even 2-color 640x200. -- ... Michael Ho, University of Nebraska Internet: ho@hoss.unl.edu | "Mine... is the last voice that you will ever hear."