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

When I run this code in SXSIM it sets register A to output and moves #%01010101 to that port.

When I run the same code on the SX52 tech board it doesn't work and register A remains set to all zeros.

What am I missing?

Device SX52, OSC4MHZ
IRC_CAL IRC_FAST
FREQ 4_000_000
reset Start

org $100
Start
	mode  $F
	mov    !ra, #%00000000
	mov     ra, #%01010101

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