VOGONS

Common searches


Search results

Display options

Re: Heath 150-307-3 Chips EGA/VGA

in Marvin \ Video
This seems to be your card: https://books.google.de/books?id=gC-DsOtl2MgC&pg=PA226&lpg=PA226&dq=sigma+ega+480+jumper&source=bl&ots=fRXfNhuL1x&sig=ACfU3U1tXiFyAq6t9wfoXbRPMH9y4x4GvA&hl=de&sa=X&ved=2ahUKEwjWqczW76HsAhXBjqQKHYMCChgQ6AEwDnoECAkQAg#v=onepage&q=sigma%20ega%20480%20jumper&f=false Nice …

Re: Heath 150-307-3 Chips EGA/VGA

in Marvin \ Video
Z-449 Z-449 (150-0307) SwitchType: EGA/ZDS 480 Line Mode Controller: Output Port(s): 15-pin analog 9-pin TTL Compatibility: MDA, HGC, CGA, EGA, VGA Video Memory: 256K only Max. Video Mode Resolution: 640 x 480 x 16 - ZDS Mode 132-Column Support: No Switches: See Below 1 2 3 4 Monitor Type OFF OFF …

Re: turbo button speed

As everyone has already mentioned, there's no "standard" way to implement the turbo/non-turbo mode functionality. For example, the VLSI VT82C486 chipset (for 486DX and 486DX2 class CPUs) has this to say about its implementation: TURBO/NON-TURBO MODE CONTROL It has become standard for fast PC/AT- …

Re: VGA custom resolution

in Marvin \ Video
What's a V-size adjustment? EDIT: Another unrelated question here; can SVGA support custom resolutions? V-size adjustment means just that: a knob on the CRT that adjusts the vertical size of the picture, stretching/compressing it. It's a common enough control on the front panel of most SVGA …

Re: VGA custom resolution

in Marvin \ Video
Except for the refresh rate of 60Hz. It causes noticable flicker on a lot of VGA (or Super-VGA) CRT monitors. Yeah, I was shocked recently at how awful Windows 3.1 looked at 640x480x16 @ 60Hz on my Trinitron CRT. It was a hideous flickering mess! Much worse than what I remembered. I made haste to …

Re: Juko Auto G7-B graphics combo card

in Marvin \ Video
but no FLOPPY if i understand it correctly? Floppy connector is the 34-pin header at the extreme end of the card. My card also has an empty spot for the second UART chip. I'm excited to try the CGA emulation (using the jumpers to 'force' that mode) and see how it looks on my MDA monitors. And check …

Re: Juko Auto G7-B graphics combo card

in Marvin \ Video
Unfortunately not. You mentioned that you found one in a PC? Did it have a hard drive? If so, it might be on there? Sadly the HDD (a Fuji FK309-26 MFM drive hooked up to an Adaptec RLL controller) doesn't spin up when power is applied, so it's going into the "maybe fix it later" bin for now. I …

Re: Juko Auto G7-B graphics combo card

in Marvin \ Video
Just a follow up - I managed to track down the manual for this card. Attached to this post Thanks for posting the manual for this card! I just found one of these in a recently-acquired "Logi 88-XT". Did you ever find the driver diskette for this card? I'm interested in the ability to switch between …

Re: Which browser do you use?

in Milliways
As a strong supporter of rendering engine diversity, I continue to browse using Firefox. But what I really want to know: which browser do you use on your 486? My attempts to browse the web using Windows 3.1 have been quite a disappointment. MSIE 3.0 actually manages to render a few sites. Netscape …

Page 6 of 7