| Routines

45937: Prepare a message in the message graphic buffer (2)

Continues from 45682. Generates the graphic data for the text of the message and centres it in the buffer at 23296.
Input
C | 254
DE | Message address
45937 | CALL 44776 | Slide the message text into the graphic buffer
45940 | SRL C | Halve the number of remaining pixel columns and add one
45942 | INC C
45943 | XOR A | Insert this number of blank pixel columns, thus centring the message
45944 | CALL 44520
45947 | DEC C
45948 | JR NZ,45943
45950 | RET |