Routines
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54506: Convert Character
Used by the routines at PrintTelegram, TypeTelegram, PrintLargeText, HandleMenuBullet, PrintOutlawName and PrintText.
Converts a character into the number of its tile in Font. The space is 0, the digits are from 1 to 10 and the letters begin at 11. A character which is not one of these gives a number which has other bits set.
Input
A The character
Output
A The number of the tile
Make a space into zero.
ConvertCharacter 54506 SUB 32 Take away 32, and keep it in C.
54508 LD C,A
54509 AND %00111111 Keep only bits 0-5.
54511 RET Z Return if it is a space.
Make the digits begin at one.
54512 LD A,C Take away 15, and keep it in C.
54513 SUB 15
54515 LD C,A
54516 AND %00111111 Keep only bits 0-5.
54518 CP 11 Return if it is a digit.
54520 RET C
Make the letters begin at eleven.
54521 LD A,C Take away 7.
54522 SUB 7
54524 RET Return.
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