Function C1 FA20

• Not much
• Does not break the stack

$C1/FA20 18          CLC                     
$C1/FA21 65 28       ADC $28    [$00:1328]   
$C1/FA23 9D A0 74    STA $74A0,x[$00:74A4]   
$C1/FA26 A0 01 00    LDY #$0001              
$C1/FA29 B7 5B       LDA [$5B],y[$00:0000]   
$C1/FA2B 29 FF 00    AND #$00FF              
$C1/FA2E 85 22       STA $22    [$00:1322]   
$C1/FA30 A5 5B       LDA $5B    [$00:135B]   
$C1/FA32 38          SEC                     
$C1/FA33 E5 22       SBC $22    [$00:1322]   
$C1/FA35 85 5B       STA $5B    [$00:135B]   
$C1/FA37 7B          TDC                     
$C1/FA38 E2 20       SEP #$20                
$C1/FA3A AE C6 7A    LDX $7AC6  [$00:7AC6]   
$C1/FA3D 60          RTS