83Plus:BCALLs:450A

Synopsis

Official Name: PutS

BCALL Address: 450A

Displays a string on the screen in the large font.

Inputs

• (curRow, curCol): Position on screen of first character
• HL: Zero-terminated string

Outputs

• String displayed on screen
• HL points to character after terminating zero of string

Destroys

None

Comments

• Since HL points to the character after the terminating zero of the string when the call is finished, you can put multiple strings in a row and display them all with calls to PutS. See the example.
• This B_CALL disables interrupts.

Example

ld hl,0
ld (curRow),hl
ld hl,string1
BCALL(PutS)
BCALL(PutS) ;hl points to string2 at this point
BCALL(PutS) ;hl points to string3 at this point
ret

string1: .db "This is a string  ",0
string2: .db "This is another string  ",0
string3: .db "Yet another string...",0

All three strings will be displayed in order, starting from the top-left corner of the screen.