The near-mythical IBM color MDA

2018-08-23 Thread Eric Schlaepfer via cctalk
The NEC Multisync monitor thread reminded me that I used one to produce a video, and I thought a few of you might enjoy it. https://www.youtube.com/watch?v=-TiHFWH4NWk

Re: The near-mythical IBM color MDA

2018-08-23 Thread Alexandre Souza via cctalk
Nice! 2018-08-23 23:29 GMT-03:00 Eric Schlaepfer via cctalk : > The NEC Multisync monitor thread reminded me that I used one to produce a > video, and I thought a few of you might enjoy it. > https://www.youtube.com/watch?v=-TiHFWH4NWk >

RE: The near-mythical IBM color MDA

2018-08-23 Thread Ali via cctalk
> > The NEC Multisync monitor thread reminded me that I used one to produce > a > video, and I thought a few of you might enjoy it. > https://www.youtube.com/watch?v=-TiHFWH4NWk Eric Which revision MDA is this? I have an original NEC Multisync and I have a tone of MDA cards including one in one

RE: The near-mythical IBM color MDA

2018-08-23 Thread Fred Cisin via cctalk
On Thu, 23 Aug 2018, Ali via cctalk wrote: Which revision MDA is this? I have an original NEC Multisync and I have a tone of MDA cards including one in one the first 5000 IBM 5150s produced. I would love to get color out of it just for the sake of doing it. Do you still have your demo programs?

Re: The near-mythical IBM color MDA

2018-08-23 Thread Eric Schlaepfer via cctalk
I'm not that lucky! But yes, an early card with the light pen connector should work. The card I used for the demo is a somewhat later revision. I added rework wires to match the schematic in the technical reference manual of the earlier revision. With either an early MDA card or a modded card, if

Re: The near-mythical IBM color MDA

2018-08-23 Thread Fred Cisin via cctalk
OK, so the demo was with a "MODIFIED" card. :-) (admittedly a trivial one that brought it in line with published schematic) Which Int10h modes does it support? QBASIC is presumably simpy using the INt10h modes. The MDA by default was in Mode 7. If it will do mode 3, then it can do Lotus in colo

Re: The near-mythical IBM color MDA

2018-08-23 Thread Chuck Guzis via cctalk
On 08/23/2018 08:31 PM, Eric Schlaepfer via cctalk wrote: > I'm not that lucky! But yes, an early card with the light pen connector > should work. > > The card I used for the demo is a somewhat later revision. I added rework > wires to match the schematic in the technical reference manual of the >

Re: The near-mythical IBM color MDA

2018-08-23 Thread Chuck Guzis via cctalk
Correction--it wasn't Glitch who got the pen, it was Trixter. I have trouble with pseudonyms. --Chuck

Re: The near-mythical IBM color MDA

2018-08-24 Thread Eric Schlaepfer via cctalk
It only supports mode 7 since it's an MDA card. :) The QBASIC COLOR statement doesn't bother to range check the arguments, it just copies them into the attribute byte in video memory. This is why the trick works. Other programs *know* that you clearly have a monochrome card so they won't use the