cscg22-gearboy

CSCG 2022 Challenge 'Gearboy'
git clone https://git.sinitax.com/sinitax/cscg22-gearboy
Log | Files | Refs | sfeed.txt

___sdcc_bcall.s (593B)

      1	.include	"global.s"
      2
      3	.area _HOME
      4
      5___sdcc_bcall::
      6banked_call::			; Performs a long call.
      7	pop	hl		; Get the return address
      8	ldh	a,(__current_bank)
      9	push	af		; Push the current bank onto the stack
     10	ld	a,(hl+)		; Fetch the call address
     11	ld	e, a
     12	ld	a,(hl+)
     13	ld	d, a
     14	ld	a,(hl+)		; ...and page
     15	inc	hl		; Yes this should be here
     16	push	hl		; Push the real return address
     17	ldh	(__current_bank),a
     18	ld	(.MBC_ROM_PAGE),a	; Perform the switch
     19	ld	l,e
     20	ld	h,d
     21	rst	0x20
     22banked_ret::
     23	pop	hl		; Get the return address
     24	pop	af		; Pop the old bank
     25	ldh	(__current_bank),a
     26	ld	(.MBC_ROM_PAGE),a
     27	jp	(hl)