4c - plot - plot pixel with R1, R2 as x, y and the color register as the color

4c - plot - plot pixel with R1, R2 as x, y and the color register as the color

df (ALT2) - ramb - set current RAM bank

04 - rol - rotate left

df (ALT3) - romb - set current ROM bank

97 - ror - rotate right by one

4c (ALT1) - rpix - read color of the pixel with R1, R2 as x, y

4c (ALT1) - rpix - read color of the pixel with R1, R2 as x, y

4c (ALT1) - rpix - read color of the pixel with R1, R2 as x, y

4c (ALT1) - rpix - read color of the pixel with R1, R2 as x, y

90 - sbk - store word to last accessed RAM address

95 - sex - sign extend 8 bit to 16 bit

00 - stop - stop GSU execution (and maybe generate an IRQ)