Search found 46 matches

by ruben_balea
Thu 10 Aug, 2017 3:48 am
Forum: Development
Topic: Olivetti GO481 video card
Replies: 5
Views: 661

Re: Olivetti GO481 video card

Yes, the definitive name "Olivetti GO481 (Paradise PVGA1A)" is clear enough and on the style of the other cards, after all it's true that the potential users should already know how the real card is, which drivers may need for each OS etc.
by ruben_balea
Wed 09 Aug, 2017 9:27 pm
Forum: Development
Topic: Olivetti GO481 video card
Replies: 5
Views: 661

Re: Olivetti GO481 video card

The amount of memory is surely 256K B , not 256K b (32KB), right? I know it's a minor detail, but I can see some potential for user confusion here, so it should probably be corrected. And for that matter, isn't it a bit inconsistent to be listing the memory amount right in the displayed name of the...
by ruben_balea
Sun 06 Aug, 2017 8:42 pm
Forum: Development
Topic: Olivetti GO481 video card
Replies: 5
Views: 661

Olivetti GO481 video card

This is a VGA compatible video card used on many Olivetti/AT&T computers. It has a Paradidse PVGA1A chip and 256KB of memory. As far as I know PVGA1A was the first consumer oriented chip having higher modes than standard VGA, like 256 colors at 640x400 and 16 colors at 800x600 on all cards and 2...
by ruben_balea
Thu 03 Aug, 2017 10:33 pm
Forum: Development
Topic: Option to change video card for systems with integrated/fixed graphics
Replies: 1
Views: 304

Option to change video card for systems with integrated/fixed graphics

I don't like to have a system stuck to a video card when on the real life it can be upgraded while others like original PC can use any card available and this is not realistic, a 8088/4.77MHz IBM PC with a Diamond Stealth 3D :shock: :?: I'm thinking on using a single global variable (because it can'...
by ruben_balea
Sun 18 Jun, 2017 10:29 pm
Forum: General
Topic: Feature Request: Missing ROMs warning instead of hiding configs
Replies: 5
Views: 624

Re: Feature Request: Missing ROMs warning instead of hiding configs

OK, I must admit that sometimes I have similar problems so I've made a set of dummy roms of different sizes, both single file and interleaved. Are based on the Generic XT rom so there are not copyright worries. It's the same Generic XT rom file expanded to those other sizes adding all the needed pad...
by ruben_balea
Sun 18 Jun, 2017 9:59 pm
Forum: Development
Topic: Why not log mising roms?
Replies: 0
Views: 199

Why not log mising roms?

Well, I thought that it was not implemented due to the required time for doing something not being a part of emulation. I was testing a basic implementation of 3 new machines and since I've already added such code to them I've decided to do the same with all other to keep the code as most uniform as...
by ruben_balea
Fri 09 Jun, 2017 2:07 am
Forum: Development
Topic: PCem crashes or closes * without any warning * if Direct3D/DirectDraw HW acceleration is disabled
Replies: 3
Views: 409

Re: PCem crashes or closes * without any warning * if Direct3D/DirectDraw HW acceleration is disabled

Yes, it works now with DirectDraw hardware acceleration disabled with "dxcpl.exe" from the latest DX SDK. It's fine even in Windows XP running in VirtualBox so I should say TEST PASSED (For those not already aware "dxcpl.exe" from DX SDK is a lot more customizable than default &q...
by ruben_balea
Wed 07 Jun, 2017 3:56 am
Forum: Development
Topic: PCem crashes or closes * without any warning * if Direct3D/DirectDraw HW acceleration is disabled
Replies: 3
Views: 409

PCem crashes or closes * without any warning * if Direct3D/DirectDraw HW acceleration is disabled

If for any reason* you have HW acceleration disabled for D3D and/or DD PCem main window won't load. (At least on my computer :roll:) Perhaps nobody else out there has HW acceleration disabled but may prevent crashing due to other reasons... Prevention is always better. With DirectDraw output enabled...
by ruben_balea
Sun 14 May, 2017 9:56 pm
Forum: General
Topic: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR
Replies: 34
Views: 1657

Re: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR

Well, apart from these few operating systems seems that there was no much software designed to run in 286 protected mode Lotus 1-2-3 v3.1 for DOS works fine also, I do think it runs in protected mode because it does not requires HIMEM.SYS to access the extended memory and does not run at all on 8086...
by ruben_balea
Thu 11 May, 2017 6:54 pm
Forum: General
Topic: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR
Replies: 34
Views: 1657

Re: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR

:?: Maybe I should have put all this on another topic? If so please sorry for not thinking about it before... :oops: On next days I will look for some 286 protected mode software to test directly in DOS and within Windows 3.1 to see if there are other problems. BIOS may expect something non standard...
by ruben_balea
Thu 11 May, 2017 5:21 pm
Forum: General
Topic: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR
Replies: 34
Views: 1657

Re: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR

And the same report made from MS-DOS 5.0 with Windows 3.1 installed but not running:
MSD report from DOS.TXT
(18.96 KiB) Downloaded 11 times
by ruben_balea
Thu 11 May, 2017 5:19 pm
Forum: General
Topic: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR
Replies: 34
Views: 1657

Re: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR

Windows 3.1 generic Super VGA driver 800x600x4bpp works with most cards Windows 3.1 Super VGA driver 800x600x4bpp.png Micorosft TETRIS @ 800x600x16bpp with ET4000 W32 driver Windows 3.1 ET4000 W32 driver 800x600x16bpp MS TETRIS.png MSD (Microsoft Diagnostics) report made from Windows 3.1: MSD report...
by ruben_balea
Thu 11 May, 2017 5:15 pm
Forum: General
Topic: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR
Replies: 34
Views: 1657

Re: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR

Tested various cards and Bahamas drivers may require a 386 for 24bpp/True Color, works up to 16bpp/High Color ET4000 and ET4000W32 drivers seems to work well at all modes supported by those drivers. Windows 3.1 ET4000 W32 driver 800x600x16bpp Color palette Windows 3.1 ET4000 W32 driver 800x600x16bpp...
by ruben_balea
Thu 11 May, 2017 5:07 pm
Forum: General
Topic: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR
Replies: 34
Views: 1657

Re: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR

Windows 3.1 setup replaces HIMEM.SYS but keeps parameters form MS-DOS HIMEM.SYS Windows 3.1 setup replaces HIMEM.SYS but keeps parameters form MS-DOS HIMEM.SYS.png Enhanced mode requires 386 CPU, REAL mode only available in 3.0 Windows 3.1 Standard mode (Enhanced mode requires 386 CPU, REAL mode onl...
by ruben_balea
Thu 11 May, 2017 5:03 pm
Forum: General
Topic: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR
Replies: 34
Views: 1657

Re: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR

Windows 3.1 does work in Standard mode, Enhanced mode needs a 386+ CPU and Real mode not available anymore since 3.0 HD controller fails first boot but works after exiting BIOS SETUP and warm reboots, on 86Box only fails a few times with AT Fixed Disk Adapter and works fine with XTIDE. Some captures...
by ruben_balea
Tue 09 May, 2017 10:08 pm
Forum: General
Topic: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR
Replies: 34
Views: 1657

DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR

With MS-DOS versions 5.x and 6.x HIMEM.SYS fails to handle the gate A20 on DELL System 200, ending up without XMS enabled so DOS will have access to only 640Kb of conventional memory which after loading DOS, drivers, TSR's and so on you may end without enough memory to run most programs. This happen...

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