In SX Microcontrollers, SX/B Compiler and SX-Key Tool, AtomicZombie wrote:

T2 is actually a counter that sets the lower address bus of the 64K SRAM I am using as a frame buffer, which is why I need it. I basically pump the first 256 bytes out of the SRAM to create the 256 pixel screen on a video line, then I INC the upper address bus to get the next 192 lines for a total frame buffer of 256x192 pixels at 256 colors (8 bits). This takes 49.152K out of the SRAM and fits nicely into a 1024x768 VGA screen by dividing by four.

My AVR code does this in 4 cycles, but the SX code takes 6, which is my problem.

 

Thanks,

Brad

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