Search found 402 matches

by ppgrainbow
Wed 29 Nov, 2017 6:52 pm
Forum: Development
Topic: Spam issues!
Replies: 12
Views: 571

Re: Spam issues!

szadycbr wrote:Hopefully there wont be more damage , than time Sarah must loose to delete 1500 or so posts for now, 1641 for now!! hrrr :evil:

I sure hope not! The spamming finally stopped at 4:41 AM this morning! :)
by ppgrainbow
Wed 29 Nov, 2017 10:41 am
Forum: Development
Topic: Spam issues!
Replies: 12
Views: 571

Re: Spam issues!

You right to post it here, cos no one will see it in other place, there is like 3 per minute, is this a person? did this? or some error/virus? I personally believe that it's one of the persons who is operating a bot account, spamming out of control like crazy. At this rate with Sarah Walker only ad...
by ppgrainbow
Wed 29 Nov, 2017 10:34 am
Forum: Development
Topic: Spam issues!
Replies: 12
Views: 571

Spam issues!

I must apologise if this topic is in the Development forum but the General forum of PCem is getting hit pretty bad with a barrage of spam post at a rate of about two forum threads per minute with well over 1,500 forum threads of the same spam operated by a spambot since joining! :evil: Something nee...
by ppgrainbow
Wed 26 Jul, 2017 5:06 am
Forum: Development
Topic: [Bug] (AMI WinBIOS 486) 486 processors having issues
Replies: 20
Views: 801

Re: [Bug] (AMI WinBIOS 486) 486 processors having issues

Oh dear! This doesn't sound too good! :(
by ppgrainbow
Mon 17 Jul, 2017 6:55 pm
Forum: Development
Topic: [Bug] MR 386DX clone is broken...
Replies: 6
Views: 422

Re: [Bug] MR 386DX clone is broken...

The MR 386DX clone is working okay. With the exception of the CPU changes, I can't seem to reproduce.
by ppgrainbow
Sun 16 Jul, 2017 7:06 am
Forum: Development
Topic: [Patch] CGA monochrome & selectable mono display
Replies: 46
Views: 3169

Re: [Patch] CGA monochrome & selectable mono display

I'd go for both! The original amber monochrome and the other one where it used the curve to create a gas plasma monochrome effect! :D
by ppgrainbow
Sat 15 Jul, 2017 11:40 pm
Forum: Development
Topic: [Patch] CGA monochrome & selectable mono display
Replies: 46
Views: 3169

Re: [Patch] CGA monochrome & selectable mono display

Awesome work on getting the shaders to work on EGA/VGA emulated displays! :)
by ppgrainbow
Mon 19 Jun, 2017 7:31 pm
Forum: Development
Topic: [Patch]Memory setting patch
Replies: 20
Views: 1352

Re: [Patch]Memory setting patch

Speaking of the Commodore PC 30 III, when I select 1,024 KB RAM, the BIOS reports only 640 KB of memory usable. If I select 1,408 KB RAM, the BIOS will report 384 KB of extended memory usable. And at least 1,408 KB of RAM is needed to run Windows 3.0 in Standard Mode. If 1,024 KB RAM is selected, Wi...
by ppgrainbow
Sun 18 Jun, 2017 9:38 pm
Forum: Development
Topic: [Patch]Memory setting patch
Replies: 20
Views: 1352

Re: [Patch]Memory setting patch

I've hear that IBM PCs can go down to as little as just 16 KB! This is possible, however you can't use DOS with less than 64kb. As PCem doesn't emulate the cassette interface adding a 16kb option would be pretty useless. Thanks for telling me. Let's not forget about allowing the Compaq Deskpro 386 ...
by ppgrainbow
Sun 18 Jun, 2017 9:14 pm
Forum: Development
Topic: [Patch]Memory setting patch
Replies: 20
Views: 1352

Re: [Patch]Memory setting patch

I've hear that IBM PCs can go down to as little as just 16 KB! This is possible, however you can't use DOS with less than 64kb. As PCem doesn't emulate the cassette interface adding a 16kb option would be pretty useless. Thanks for telling me. Let's not forget about allowing the Compaq Deskpro 386 ...
by ppgrainbow
Sat 17 Jun, 2017 5:44 pm
Forum: Development
Topic: [Patch] CGA monochrome & selectable mono display
Replies: 46
Views: 3169

Re: [Patch] CGA monochrome & selectable mono display

Monochrome VGA is simply a grayscale version of a real VGA screen. Here's a example: http://www.computernerdkev.heliohost.org/skd-4000/img/Small/P1010035,s.jpg Monochrome EGA displays can have up to 16 grayscale shades (16 colours out of 64 palette colours). Monochrome VGA displays can have up to 6...
by ppgrainbow
Sat 17 Jun, 2017 8:17 am
Forum: Development
Topic: [Patch] CGA monochrome & selectable mono display
Replies: 46
Views: 3169

Re: [Patch] CGA monochrome & selectable mono display

basic2004, have you though of applying the patch to add support for EGA and VGA monochrome displays yet? It would be awesome to add support! :D That's interesting but I don't know about monochrome EGA. I want to know EGA 16 colors on real monochrome monitor and 64 palettes on real monochrome monito...
by ppgrainbow
Fri 16 Jun, 2017 3:31 pm
Forum: Development
Topic: [Patch]Memory setting patch
Replies: 20
Views: 1352

Re: [Patch]Memory setting patch

Additional patch attached below applies - PS/1 2011, AMI 286 clone, Award 286 clone, DTK 386SX clone, Commodore PC30 III, Dell System 200 and AMI 386SX clone can have less than 1MB memory. - Changed IBM PC's memory granularity value to 32KB . This patch replaces previous patch. Awesome work so far!...
by ppgrainbow
Fri 16 Jun, 2017 7:40 am
Forum: Development
Topic: [Patch]Memory setting patch
Replies: 20
Views: 1352

Re: [Patch]Memory setting patch

It's easy job. Please let me know what machines have less than 1MB memory when it ls released. OKay! :D Most 386SX and 386DX-based motherboards had as little as 512 KB of base RAM. I believe that the Commodore PC 30 III was released in 1988 and it was configured with either 512 KB or 640 KB of RAM:...
by ppgrainbow
Fri 16 Jun, 2017 4:18 am
Forum: Development
Topic: [Patch]Memory setting patch
Replies: 20
Views: 1352

Re: [Patch]Memory setting patch

Yes. I've just added if AT machines granularity value less than 128, consider memory size is MB and greater or equal than 128, consider memory size is KB. And additional patch attached below applies PS/1 2011, AMI 286 clone, Award 286 clone and DTK 386SX clone can have less than 1MB memory. Awesome...
by ppgrainbow
Fri 16 Jun, 2017 3:01 am
Forum: Development
Topic: [Patch] CGA monochrome & selectable mono display
Replies: 46
Views: 3169

Re: [Patch] CGA monochrome & selectable mono display

basic2004, have you though of applying the patch to add support for EGA and VGA monochrome displays yet? It would be awesome to add support! :D
by ppgrainbow
Fri 16 Jun, 2017 2:23 am
Forum: Development
Topic: [Patch]Memory setting patch
Replies: 20
Views: 1352

Re: [Patch]Memory setting patch

Great work on the memory settings patch! Can this setting be applied to 286, 386 and 386SX clones? I know for a fact that the IBM PS/1 Model 2011 started out with 512 KB of base memory. Yes. I've just added if AT machines granularity value less than 128, consider memory size is MB and greater or eq...
by ppgrainbow
Thu 15 Jun, 2017 5:22 pm
Forum: Development
Topic: [Patch]Memory setting patch
Replies: 20
Views: 1352

Re: [Patch]Memory setting patch

Great work on the memory settings patch!

Can this setting be applied to 286, 386 and 386SX clones? I know for a fact that the IBM PS/1 Model 2011 started out with 512 KB of base memory.
by ppgrainbow
Tue 06 Jun, 2017 6:36 am
Forum: Development
Topic: [Bug] IDE HDD stuttering emulation
Replies: 27
Views: 1538

Re: [Bug] IDE HDD stuttering emulation

I don't, but Sarah clearly pointed the issue in her last post. Yes, because DOS is idling waiting for the IDE transfer to complete. It's not the disk IO that causes the slowdown, it's the CPU emulation of the DOS idle loop that causes the slowdown. I can only test and measure from the outside, but ...
by ppgrainbow
Tue 06 Jun, 2017 5:16 am
Forum: Development
Topic: [Bug] IDE HDD stuttering emulation
Replies: 27
Views: 1538

Re: [Bug] IDE HDD stuttering emulation

I've created an RAM disk using XMSDSK to remove the HDD emulation completely out of the way, and indeed playing games from this ram disk is now as smooth as DOSBox or my hardware Pentium PC. It is obviously your choice to completely ignore that issue SarahWalker, but I think you should at least ack...
by ppgrainbow
Mon 15 May, 2017 6:08 pm
Forum: General
Topic: IBM PS/2 Model 55SX can't boot from ESDI hard disk
Replies: 7
Views: 585

Re: IBM PS/2 Model 55SX can't boot from ESDI hard disk

Hang on, I remember this now. There's a bit in the CMOS RAM of the 55SX that prevents it from booting from hard disc, and isn't exposed through the reference disc. I've committed default NVR files for all of the PS/2 models in rev 718 - use the file in that commit as a starting point and it should ...
by ppgrainbow
Mon 15 May, 2017 4:06 pm
Forum: General
Topic: IBM PS/2 Model 55SX can't boot from ESDI hard disk
Replies: 7
Views: 585

Re: IBM PS/2 Model 55SX can't boot from ESDI hard disk

The Wikipedia article on the PS/2 states that the Model 55SX has support for the ESDI controller while the Model 50 doesn't. The Model 50 has to rely on HDD controllers other than ESDI. IMHO, if Wikipedia says that, then it's wrong on this one. AFAIK, both model 50 and 55 (and 70) can support "...
by ppgrainbow
Mon 15 May, 2017 7:26 am
Forum: General
Topic: IBM PS/2 Model 55SX can't boot from ESDI hard disk
Replies: 7
Views: 585

Re: IBM PS/2 Model 55SX can't boot from ESDI hard disk

> I bet that the inability to boot from the ESDI hard disk also affects the emulated IBM PS/2 Model 50 and IBM PS/2 Model 80 as well, but those machines have not been tested at this time. Note that the ESDI controller in model 80 is very different and incompatible with that in models 50 and 55. Eep...
by ppgrainbow
Mon 15 May, 2017 3:43 am
Forum: General
Topic: IBM PS/2 Model 55SX can't boot from ESDI hard disk
Replies: 7
Views: 585

IBM PS/2 Model 55SX can't boot from ESDI hard disk

I'm having a problem with the emulated IBM PS/2 Model 55SX is that I can't boot from the ESDI hard disk. Instead, the emulated machine goes to ROM BASIC: PS2M55SX_ROM_BASIC.png I have the IBM ESDI Fixed Disk Adapter enabled and the hard disk geometry for the boot drive is 615 cylinders, 8 heads and ...
by ppgrainbow
Mon 15 May, 2017 2:01 am
Forum: Development
Topic: PS/2 resources
Replies: 5
Views: 1328

Re: PS/2 resources

I have made modifications to the @DDFF.ADF file to add support for specific adapter memory locations for the IBM ESDI Fixed Disk Adapter. The English version of the file can be download here:

@ddff.adf
IBM ESDI Fixed Disk Adapter (US English)
(2.75 KiB) Downloaded 53 times
by ppgrainbow
Sat 13 May, 2017 1:55 am
Forum: General
Topic: Physical disk as Pcem hard disk?
Replies: 9
Views: 949

Re: Physical disk as Pcem hard disk?

I would like to this feature request! I currently have a 512 MB, 1 GB and 2 GB flash drive formatted as a FAT partition, a 1 GB and 2 GB compact flash and a 2 GB SD card that can be used to run under MS-DOS/Windows 95. I suspect reading from a FAT32 host would be much easier to implement FAT32 is a...
by ppgrainbow
Sat 13 May, 2017 12:55 am
Forum: General
Topic: Physical disk as Pcem hard disk?
Replies: 9
Views: 949

Re: Physical disk as Pcem hard disk?

I would like to this feature request!

I currently have a 512 MB, 1 GB and 2 GB flash drive formatted as a FAT partition, a 1 GB and 2 GB compact flash and a 2 GB SD card that can be used to run under MS-DOS/Windows 95.
by ppgrainbow
Thu 11 May, 2017 9:21 pm
Forum: General
Topic: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR
Replies: 34
Views: 1654

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

HIMEM.SYS issues fixed in rev 716. I'm still not sure what chipset is being used here; it's apparently a Chips & Technology one, but the BIOS doesn't access any of the NEAT or SCAT ports. I suspect it might be a CS8220 with some custom stuff on top, but as that doesn't define any registers it d...
by ppgrainbow
Thu 11 May, 2017 8:18 pm
Forum: General
Topic: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR
Replies: 34
Views: 1654

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 standar...
by ppgrainbow
Thu 11 May, 2017 5:17 pm
Forum: General
Topic: DELL System 200 (and others) HIMEM.SYS (MS-DOS 5.0+) GATE A20 ERROR
Replies: 34
Views: 1654

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

From the look of these screenhots, I believe that Windows for Workgroups 3.1 was the last to work on a 286. Windows for Workgroups 3.11 dropped Standard Mode support on all 286-based machines and required at least a 386 or better to run.

Thank you for the screenshots, btw.

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