Re: CGA/MDA/HGC test program

Posted on 2023-10-09, 08:23

by

by i386

in Marvin \ Software

in Marvin \ Software

Thanks you also! I known a lot of interesting things about old video-systems during this topic! Hi, I'm also grateful for attending the discussion here. Sorry, if wrote a bit too much, also. PS: I vaguely remember that the paint program Dr. Halo used video memory dumps as a graphics format, too. If …

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Re: CGA/MDA/HGC test program

Posted on 2023-09-20, 07:32

by

by i386

in Marvin \ Software

in Marvin \ Software

Jo22 wrote on 2023-09-18, 19:11: @i386 You're welcome. Thank you for the new ZIP, too. 🙂👍 Thanks you also! I known a lot of interesting things about old video-systems during this topic!

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Re: CGA/MDA/HGC test program

Posted on 2023-09-17, 07:18

by

by i386

in Marvin \ Software

in Marvin \ Software

I've added second HGC page test. CMD line has been little changed. Now: CT h0 [filename] page0 test CT h1 [filename] page1 test And yes, you can see influence with neighboring CGA card, when HGC page1 in use

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CPUCTL - program for read/write MSR under DOS

Posted on 2023-09-15, 07:29

by

by i386

in Marvin \ Software

in Marvin \ Software

Hi all! I want to present the new version of my old utility CPUCTL.EXE, that initially was written in 2016 year. This program has been made for read and modify CPU MSR registers under DOS. It sometimes used for tuning modern CPU (for example, make it more slowest in DOS enviromment), hardware …

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Re: CGA/MDA/HGC test program

Posted on 2023-09-15, 07:16

by

by i386

in Marvin \ Software

in Marvin \ Software

Grzyb , mkarcher , Jo22 - many thanks for your explanations! First, I try out to do second HGC page support, as time and my health permits. About non-standart HGC modes - needs thinking. Unfortunately, currently I even have no original MDA/HGC monitor, I just temporary changed original 16.000 MHz …

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Re: UNIX release for 386SX

Posted on 2023-09-14, 08:11

by

by i386

in Marvin \ Software

in Marvin \ Software

Hi, I have a 386SX build where I would like to install a version of UNIX. I've searched on the Internet for UNIX on x86 architectures and I've found: Interactive Unix (PC/IX) SCO Unix Microsoft Xenix For now I'm oriented to Interactive Unix, version 4.1, because it's available here as 3.5'' floppy …

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Re: CGA/MDA/HGC test program

Posted on 2023-09-14, 07:06

by

by i386

in Marvin \ Software

in Marvin \ Software

I don't mean to "purr oil in the fire", but.. Back in the day, XT class PCs with on-board graphics not too seldomly had a COLOR/MONO switch on the back (next to DE9 and RCA jack). That way, they could either act as CGA compatible (home users who play games) and Hercules "MGA" compatible ( …

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Re: CGA/MDA/HGC test program

Posted on 2023-09-14, 06:40

by

by i386

in Marvin \ Software

in Marvin \ Software

CGA_COMP is pretty comprehensive about CGA compatibility testing, no need for another such program. I could use, however, something as comprehensive for HGC compatibility testing. The necessary features would be: - video memory integrity test - text mode test, including all the attributes (normal, …

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CGA/MDA/HGC test program

Posted on 2023-09-13, 09:03

by

by i386

in Marvin \ Software

in Marvin \ Software

Hi all! This topic about my small program, CT.EXE It has been designed for visual testing CGA/MDA/HGC video cards, and VGA/EGA compatibility with original CGA card. The idea for the program was born during conversations with Rio444 . Command line options: CT 0 - mode 0 check, character generator …

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Re: Rick Dangerous (1989) +8 TRAINER

Posted on 2023-02-24, 07:26

by

by i386

in DOS

in DOS

Hmm...I think I tested it on the MiSTeR, but I can't remember tbh I have little time as of late, so it's in the queue along with a small surprise feature that would complete this project. But its going to be a while before I have some spare time to implement it. If you find a chance to test it on …

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, P3V133, CUBX, CUBX-E/L and P3C-E

Posted on 2023-02-20, 09:41

by

by i386

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well if it can't be solved it's no big deal for me at this point. The system is completely usable with the ACPI tables removed. The shutdown bug is nothing more than a mild annoyance. Good to know. Currently, I wouldn't know what to do except for inserting debug outputs at various places and …

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, P3V133, CUBX, CUBX-E/L and P3C-E

Posted on 2023-02-19, 08:32

by

by i386

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

To get this thread back on track - I can report there is no observable difference between p3bf_no_acpi_tables and p3bf_no_ACPI_tables_no_A0_A1_handlers. Both builds allow Win2k setup and Acronis True Image 2011 to load without issue, but both also suffer from the same shutdown bug. I have also …

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, P3V133, CUBX, CUBX-E/L and P3C-E

Posted on 2023-02-18, 13:28

by

by i386

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

But I did further tests with controller this time PCI (directly no onboard bios)and everything works normally, so the onboard controller would seem actually disabled I suspect the problem is on the implementation of PCI bridged ISA that introduce some sort of limitation on this mobo.......mah....:) …

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, P3V133, CUBX, CUBX-E/L and P3C-E

Posted on 2023-02-17, 14:22

by

by i386

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I apologize that I start with a post off topic.... I'm playing with an ASUS P3V133 trying to get a 16bit ISA controller to work(CA9342 no BIOS no PNP) the disk attached is detected by the mainboard but cannot be accessed, I would like to understand if there is hope to make it work or if because of …

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, P3V133, CUBX, CUBX-E/L and P3C-E

Posted on 2023-02-08, 16:43

by

by i386

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I want to show the photos of my P2L97-DS, that I mentioned earlier Before repairing Filename P2L97-DS_t.jpg File size 258.7 KiB Views 1603 views Filename P2L97-DS_b.jpg File size 298.05 KiB Views 1603 views After repairing Filename 20230208_t1.jpg File size 1.61 MiB Views 1603 views Filename …

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, P3V133, CUBX, CUBX-E/L and P3C-E

Posted on 2023-02-07, 08:28

by

by i386

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

BTW, I remember one more potential PPRo HW incompatibility problem. PPRo has CMOS signal level 3.3V, but Pentium2/3 have 2.5V CMOS levels. Sometimes some PPRo->Slot1 converters have pull-up resistors to 3.3V for CMOS signals. In some boards PPro may not starting (or stop during POST) even with right …

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, CUBX and CUBX-E/L

Posted on 2023-02-07, 08:16

by

by i386

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank you, that is interesting! I've taken a quick look. On a first glance at the 0102 BIOS, I can't find any positions where the code actually reads anything from port 0xB2. Maybe the handlers are still missing there? Yes, very probably that no the port 0xB2 reading in BIOS code, since that BIOS …

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, CUBX and CUBX-E/L

Posted on 2023-02-05, 14:10

by

by i386

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks a lot for your work and the documentation! The MSR stuff was straightforward enough to find out, but having no Pentium Pro hardware at hand, I probably would not have located the APMC write problem. Thank you also! You are doing a very helpful job!! Good to know. Do you happen to remember …

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, P3V133, CUBX, CUBX-E/L and P3C-E

Posted on 2023-02-05, 13:42

by

by i386

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There is no Pentium Pro to Slot 1 adapter left anywhere on sale at, eBay, Aliexpress, Newegg, Amazon etc. The Pentium Pro adapter can only be used with 66 MHz bus. Not all mainboards can support this fsb, like i815 and i820 chipset. The performance of Pentium Pro is up to 233 MHz with of the die …

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Re: Modified BIOSes for ASUS P3B-F, P3V4X, CUBX and CUBX-E/L

Posted on 2023-02-03, 13:51

by

by i386

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, it doesn't work unfortunately. But I found an old Russian article about running a ppro in a 440bx board, so I'll have a read. Really appreciate your help bud/maam!! Very glad to hear that this article did help! I was co-author this article (Emil from Baku), in BIOS mod part. The mod shouldn't …

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