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Text: pr2

[BBC Micro disc version, Flight]

Name: pr2 [Show more] Type: Subroutine Category: Text Summary: Print an 8-bit number, left-padded to 3 digits, and optional point
Context: See this subroutine in context in the source code References: This subroutine is called as follows: * fwl calls pr2 * tal calls pr2 * TT210 calls pr2 * TT25 calls pr2 * TT151 calls via pr2+2

Print the 8-bit number in X to 3 digits, left-padding with spaces for numbers with fewer than 3 digits (so numbers < 100 are right-aligned). Optionally include a decimal point.
Arguments: X The number to print C flag If set, include a decimal point
Other entry points: pr2+2 Print the 8-bit number in X to the number of digits in A
.pr2 LDA #3 \ Set A to the number of digits (3) LDY #0 \ Zero the Y register, so we can fall through into TT11 \ to print the 16-bit number (Y X) to 3 digits, which \ effectively prints X to 3 digits as the high byte is \ zero