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Loader: BEGIN

[6502 Second Processor version]

Name: BEGIN [Show more] Type: Subroutine Category: Loader Summary: Initialise the configuration variables and start the game
Context: See this subroutine in context in the source code Variations: See code variations for this subroutine in the different versions References: This subroutine is called as follows: * S% calls BEGIN
.BEGIN \JSR BRKBK \ This instruction is commented out in the original \ source LDX #(CATF-COMC) \ We start by zeroing all the configuration variables \ between COMC and CATF, to set them to their default \ values, so set a counter in X for CATF - COMC bytes LDA #0 \ Set A = 0 so we can zero the variables .BEL1 STA COMC,X \ Zero the X-th configuration variable DEX \ Decrement the loop counter BPL BEL1 \ Loop back to BEL1 to zero the next byte, until we have \ zeroed them all LDA XX21+SST*2-2 \ Set spasto(1 0) to the Coriolis space station entry STA spasto \ from the ship blueprint lookup table at XX21 (so LDA XX21+SST*2-1 \ spasto(1 0) points to the Coriolis blueprint) STA spasto+1 \ Fall through into TT170 to start the game