Vas Crabb
Vas Crabb
Well, it always has to pad out the CHD file to a whole number of hunks. It isn’t extracting the padding when it extracts the content. The padding shouldn’t be...
There are two parts to CD TEXT – lead-in area info (MODE=4), and program area info (MODE=2). The CD TEXT data is stored in subcodes U to W (6 bits),...
The 68705 timer is working. We’ve got lots of nasty test cases for it. The Zorba keyboard and Xain’d Sleena MCU were particularly nasty to get right. It isn’t free-running...
> Edit: Sorry, there's one just ten lines after, it goes back to 255. That’s correct, it triggers an interrupt when it passes zero and continues to count down, wrapping...
OK, after looking at the schematics, I noticed the 6821’s CB1 is tied high, but we haven’t hooked this up in MAME. It’s worth giving that a shot just to...
> Try setting the 68705 clock to 1021800 in mouse.cpp. That seems to make the cursor smoother in Apple II Desktop, and the schematic shows both the microcontroller and the...
Would help to actually link to the schematic: https://archive.org/details/APPLE_050-0101-A-1of1
8ab7404eac41f92bbf5ca3700ab4043cf3021a24 may help with timing issues.
The 6821 is supposed to be 100% compatible from a software point of view. The main difference is that it’s manufactured using a newer semiconductor process. The electrical characteristics are...
To my eye, that looks worse. It looks like when someone cranks up the saturation control on the TV to an ungodly level. Look at how it make the “GO!”...