24-05-2022, 10:56 AM
Another little update on the Classic-Plus
Over the last couple of weeks I've been implementing the extended graphics functions in the FPGA.
This includes 4 bit plane graphics (like the Gamma), backward compatible with the Premium series banked PCG scheme.
It also includes some hardware 'acceleration helper' elements to speed up drawing to the screen and
horizontal scrolling (bit by bit, rather than character). Right now, I'm writing test software to prove out the functionality.
Once all the graphics functions are tested, I'll do a full write up here on the new video modes and the hardware helpers.
Aside from that, I've also proven out the Classic-Plus running at both 3.375Mhz ( Microbee normal CPU clock rate) and
10Mhz (Classic-Plus enhanced CPU speed). Running at 10Mhz it is quite zippy!
More to come.
Over the last couple of weeks I've been implementing the extended graphics functions in the FPGA.
This includes 4 bit plane graphics (like the Gamma), backward compatible with the Premium series banked PCG scheme.
It also includes some hardware 'acceleration helper' elements to speed up drawing to the screen and
horizontal scrolling (bit by bit, rather than character). Right now, I'm writing test software to prove out the functionality.
Once all the graphics functions are tested, I'll do a full write up here on the new video modes and the hardware helpers.
Aside from that, I've also proven out the Classic-Plus running at both 3.375Mhz ( Microbee normal CPU clock rate) and
10Mhz (Classic-Plus enhanced CPU speed). Running at 10Mhz it is quite zippy!
More to come.