Looking for a powerful, versatile DOS emulator that you can take with you anywhere? Look no further than DOSBox Portable, the latest creation from the tech wizards at DOSBox. Whether you're a gamer searching for an easy way to play classic DOS titles, or a programmer trying to run legacy applications, DOSBox Portable has got you covered. With its user-friendly interface and lightning-fast performance, DOSBox Portable is a must-have for any Windows 7 user looking to unleash the full potential of their software. Download it today and experience the best in DOS emulation!

DOSBox Portable emulates an Intel x86 PC, complete with sound, graphics, mouse, modem, etc., necessary for running many old DOS games that simply cannot be run on modern PCs and operating systems. While not restricted to games, the emphasis has been on getting DOS games to run smoothly, which means that communication, networking and printer support are still in early developement.

New Release
INT 21h AH=4Ah resize memory: Compact free blocks only at or after the segment being resized, as MS-DOS is documented to do (joncampbell123).
INT 21h AH=4Ah resize memory: Fix bug where, if asked to resize a previously freed memory block and the block is not the last block in the MCB chain, and the next block in the MCB chain is also free, the MCB management code would correctly compact free blocks but then allocate according to the old size of the freed MCB block, causing truncation of the MCB chain.
Fix for MCB chain truncation caused by California Games II DOS memory management when running in Tandy graphics mode. (joncampbell123).
Add dosbox.conf option, disabled by default, where if the MCB memory chain is corrupted anywhere past the running program's memory block, and it does anything to cause allocation, a new free memory block is created to satisfy allocations instead of halting emulation. Some DOS programs are a bit sloppy in a way that can corrupt the MCB chain.
When enabled, this behavior matches apparent MS-DOS behavior (joncampbell123).
Debugger: DOS MCBS command now also prints the segment immediately following the last MCB block (joncampbell123).
Tseng ET3000/ET4000: Update Status register 3DAh behavior when emulating
Tseng chipsets to reflect Tseng datasheet, and VGAKIT SVGA detection code expectations. Bit 7 is expected, as documented by Tseng, to be the inverse of bit 3 (vertical retrace). Extended Start Register CRTC 33h must not allow setting the upper 4 bits because Tseng only documents the bottom four, and because VGAKIT requires it for Tseng detection (joncampbell123).
Fix bug that, for machine=hercules, prevented Hercules palette shortcut from changing colors when in graphics mode (joncampbell123).
Remove mixer and VGA capture test modes from integration device. Update integration device version number. Convert hardcoded magic constants used in IG into constants in iglib.h which is now shared explicitly with the iglib.h in DOSLIB. Add integra
[ DOSBox Portable release history ]

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