Re: Emulated ATA-1 controller works with MS-DOS but fails to boot?

Posted on 2015-09-10, 22:09

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by superfury

in PC Emulation

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I've fixed the problem: The PPI ports 0x62 and 0x63 needed to be added to properly detect the 2 floppy drives (instead of detecting 4 floppy drives and confusing the hard disk BIOS (drives A,B,C,D are floppy, drives E,F,G,H hard disk/cdrom in that case. It tries to boot the C drive (floppy #3) which …

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Re: Emulated ATA-1 controller works with MS-DOS but fails to boot?

Posted on 2015-09-10, 19:27

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by superfury

in PC Emulation

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When backtracing the disassembly given by my emulator I find this: 0:00:14:62.6.0699: C600:0AB7 (B480)MOVB AH, 80 0:00:14:62.6.0700: Registers: 0:00:14:62.6.0703: AX: A000, BX: 7C00, CX: 0001, DX: 0000 0:00:14:62.6.0705: CS: C600, DS: 9FC0, ES: 0000, SS: 0000 0:00:14:62.6.0707: SP: 7ED2, BP: 7ED4, …

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Emulated ATA-1 controller works with MS-DOS but fails to boot?

Posted on 2015-09-10, 15:37

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by superfury

in PC Emulation

in PC Emulation

I've written myself an ATA-1 controller I'm using with my emulator: https://bitbucket.org/superfury/x86emu/src/75e4a4ace3c20c453cc96c126ae1f8ef79d41210/hardware/ide.c?at=master I can boot from a floppy and format, parition, add files, execute files and read files from it (I'm using the XT-IDE BIOS …

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Re: x86EMU emulator testers wanted

Posted on 2015-09-10, 14:03

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by superfury

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My latest x86EMU build: Filename x86EMU_20150910_1332.zip File size 344.37 KiB Downloads 38 downloads File comment x86EMU build 2015/09/10 13:32 - Applied changes to support linux (source code wise, currently untested on linux). - Fixed some PSP vs linux bugs and 64-bit fopen. It should now work …

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Re: x86EMU emulator testers wanted

Posted on 2015-09-09, 23:03

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by superfury

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I've created a wiki with a manual on x86EMU: https://bitbucket.org/superfury/x86emu/wiki

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Re: x86EMU emulator testers wanted

Posted on 2015-09-09, 18:56

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by superfury

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My latest x86EMU build: x86EMU_20150909_2018.zip - Optimized dynamic image read/write of sectors. - Optimized disk handler results. - Optimized IDE/ATA hardware. MS-DOS can now fully handle the mounted ATA hard disks (no errors anymore). Booting from a hard disk is still to be fixed (working on it). …

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Re: x86EMU emulator testers wanted

Posted on 2015-09-09, 07:02

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by superfury

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My latest x86EMU build: x86EMU_20150908_2130.zip - Added locks to all output to text surfaces (making the application more robust in multithreading). - Fixed keyboard. It was detecting it still was executing a command in some cases, when it's actually done already. - Simplified text surfaces to fix …

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Re: Please help me fix my ATA-1 disk controller emulation.

Posted on 2015-09-08, 16:58

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by superfury

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This is my latest version: https://bitbucket.org/superfury/x86emu/src/5aca1cc43315b074b257a9e2abbd3aaf45228d3b/hardware/ide.c?at=master MS-DOS can partition, format and read/write it without errors now. For some reason the XT-IDE ROM refuses to boot from the harddisk (I've used FDISK and FORMAT /S …

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Re: x86EMU emulator testers wanted

Posted on 2015-09-08, 16:52

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by superfury

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Just a fast little update: Filename x86EMU_20150908_1833.zip File size 344.2 KiB Downloads 42 downloads File comment x86EMU build 2015/09/08 18:33 - Added write disk vs read disk color indication LEDs (orange for writes, green for reads). - Added ATA LED indicating disk access.

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Re: x86EMU emulator testers wanted

Posted on 2015-09-08, 14:06

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by superfury

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My latest build: x86EMU_20150908_1559.zip - Fixed IDE/ATA hard disk emulation. It's now correctly reading and writing the hard disks. - Optimized Superfury Dynamic Disk Image (SFDIMG files) hard disk image access. - Moved BIOS hard disk image information up. - Added support for .ima disk images. - …

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Re: x86EMU emulator testers wanted

Posted on 2015-09-07, 15:43

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by superfury

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When I'm trying to load Freedos (floppy disk version) I get "Freedos123" after which it does nothing. Anyone knows what's going wrong here?

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Free 80(1)86 compatible VGA BIOS?

Posted on 2015-09-07, 14:43

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by superfury

in PC Emulation

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Is there a free or open source VGA 80(1)86 BIOS I can legally use with my x86EMU? So far I got the Turbo XT BIOS v2.5 and PC-XTIDE BIOS as free alternatives. Is there a free or open source VGA BIOS I can use/bundle with my emulator? I think maybe SeaBIOS, but I can't find the 16-bit version of it?

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Re: x86EMU emulator testers wanted

Posted on 2015-09-07, 09:11

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by superfury

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Here's a newly createn 8GB(although paritioned as a total of1 4GB due to MS-DOS 6.22 fdisk limitations) hard disk image: Filename 8GB.sdfimg.zip File size 3.43 KiB Downloads 41 downloads File comment 8GB SFDIMG hard disk paritioned as 2GB and 1.66GB drives. The same image, but with FDISK /MBR and …

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Re: x86EMU emulator testers wanted

Posted on 2015-09-07, 08:23

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by superfury

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My latest version: Filename x86EMU_20150907_1042.zip File size 342.36 KiB Downloads 40 downloads File comment x86EMU build 2015/09/07 10:42 - Added information text with file type and disk image size to the selection of disk images. - Fixed 64-bit filesize being truncated to 32-bits. This caused …

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Re: x86EMU emulator testers wanted

Posted on 2015-09-06, 23:34

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by superfury

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Btw here's a simple 4GB(actually 3805MB) bootable disk image made using the XTIDE BIOS and MS-DOS 6.22: Filename test.sfdimg.zip File size 8.37 KiB Downloads 46 downloads File comment Simple 3805MB disk image with MS-DOS 6.22 in 2 2GB partitions, bootable.

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Re: x86EMU emulator testers wanted

Posted on 2015-09-06, 22:33

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by superfury

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Something strange happens though: when I start a game like Commander Keen or Scandisk, the arrow keys and enter key doesn't work, but the numpad arrow keys and the numpad enter key does work instead? Can you see what's going wrong? The mapping is in emu/io/input.c. There's a big array (104 items) …

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Re: x86EMU emulator testers wanted

Posted on 2015-09-06, 22:08

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by superfury

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Btw I'm interested in those changes to get it running on Linux. I assume it can be added using some #ifdefs? Can't you make some compatible Makefile.linux file (Just like I did with the Makefile.psp and Makefile.win)? Then I can add it to the project for linux compatibility. Atm you can build PSP …

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Re: x86EMU emulator testers wanted

Posted on 2015-09-06, 21:35

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by superfury

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To start using the emulator, place the ROMs in the ROM directory (I'm using the Turbo XT BIOS as BIOSROM.bin, IBM VGA BIOS as OPTROM.1 and XT-IDE BIOS as OPTROM.2. Create if needed and mount a hard disk image if you want hard disk emulation. Then: Place the latest XT-IDE files in a floppy disk image …

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Re: x86EMU emulator testers wanted

Posted on 2015-09-06, 21:17

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by superfury

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Btw the 64-bit fopen is used to access large disk images of 4GB and larger (also used by my sfdimg file format, to use 64-bit disk positioning. It supports up to 2TB disk images using 32-bit LBA). Although the LBA addressing is currently limited to 28-bits (LBA28 addressing of my ATA-1 hard disk …

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Re: x86EMU emulator testers wanted

Posted on 2015-09-06, 21:01

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by superfury

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Edit: moved the content to the wiki.

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