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 Readme for:  Emulation » Misc » blitzen.lha

Blitzen

Description: Blitter emulator for OS4 machines without chipset
Download: blitzen.lha       (TIPS: Use the right click menu if your browser takes you back here all the time)
Size: 25kb
Version: 0.3
Date: 07 Jan 07
Author: Peter Gordon
Submitter: Peter Gordon
Email: pete/petergordon org uk
Homepage: http://www.petergordon.org.uk
Category: emulation/misc
License: Freeware
Distribute: yes
Min OS Version: 4.0
FileID: 2485
 
Images:
 
Videos:
Comments: 5
Snapshots: 0
Videos: 0
Downloads:  (Current version)
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Blitzen 0.3
===========

By Peter Gordon (pete()petergordon.org.uk)

Blitzen is a blitter emulator for OS4. It attempts to impliment enough of the
functionality of the classic Amiga blitter to make a few more old programs
run on OS4 systems without the classic chipset (IE AmigaOne).


The following is currently emulated:

 - Ascending and descending copy operations with shift
 - Descending mode fill operations with shift
 - Line mode (not tested)
 - End of DMA interrupt for apps using SetIntVector()
 - The 68k "WaitBlit" function is patched to wait for the emulated blitter

What is not emulated:

 - Ascending mode fill operations (the hardware reference says they don't work
  properly, and I don't currently know what happens if you try it on the real
  hardware).
 - End of DMA interrupt for apps abusing the 68k VBR

You can run blitzen at any time, and quit it with Ctrl-C.



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