Monday, 14 April 2014

Beginning to rework the VIC-IV to support DMA delay and other things

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Until now, the VIC-IV implementation has fetched the character and colour ram byte as it draws each character.  Also, it has basically been ...
Sunday, 13 April 2014

Simple disk chooser to pick D81 files from the SD card

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Now that it is possible to read from D81 files on the SD card, I wanted a way to pick from the images on the SD card, and make the floppy co...
Friday, 11 April 2014

The internal drive now works (for reading)

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I am continuing to work on the floppy controller. I have been tantalisingly close to being able to access the SD card via the internal 158...
2 comments:
Monday, 7 April 2014

Floppy controller emulation now partly works

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Some more work on the floppy controller and kickstart ROM has yielded some nice results. First, I modified the kickstart ROM so that it lo...
Sunday, 6 April 2014

Getting closer with the C65 DOS

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The recent work on emulating the F011 floppy drive controller (FDC) is finally starting to come together. Basically, this boils down to th...
2 comments:
Saturday, 5 April 2014

Progress towards making the 1581 DOS work

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Today I have been working on implementing enough of the F011 floppy controller to make the internal DOS work. The idea is that it will poi...
1 comment:
Thursday, 3 April 2014

C65-mode ML Monitor is working

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After bashing my head against various CPU speed optimisations lately, with "working" and "faster" seeming to be mutually...