English Amiga Board - View Single Post - WinUAE gives "HALT3" when blitting a shape to screen

E-Penguin · 27 April 2018, 20:41

OK, so I installed StackAttack2 (put in the startup-sequence) so hopfully that sorted any possible stack issue.

I rewrote the code to not do anything with GetAShape or drawing directly to bitmaps, removed palette stuff, double buffering stuff, and tried to get to the bare minimum necessary to blit something.

Same results - one frame it draws then HALT3.

Updated code:

Code:

;; Play nicely with WB
WBStartup

;; Everything is a WORD unless otherwise stated
DEFTYPE .w

;; Get a shape
#SH_1 = 1
LoadShape #SH_1, "testshape.ilbm"

;; GO BLITZ MODE
BLITZ

;; Not entirely sure what these do but needed to control the screen
;; Set up a CopList, low-res, 2 bitplane
#CL_1 = 0
InitCopList #CL_1, $002
CreateDisplay #CL_1

;; Allocate the bitmap
#BM_DISP1 = 0
BitMap #BM_DISP1,320,256,2

;; Do until mouse press
While Joyb(0)=0	
	Use BitMap #BM_DISP1
	
	;; Blit
	Blit #SH_1, 0, 0
	
	;; Display it
	VWait
	DisplayBitMap #CL_1, #BM_DISP1
Wend

End

I just don't see what I'm doing wrong. I comment out the blit and it ran fine (drawing a blank bitmap).

The problem appears to be the blit (or qblit - same result).

27 April 2018, 20:41	#7
E-Penguin Banana Join Date: Jul 2016 Location: Darmstadt Posts: 1,214	OK, so I installed StackAttack2 (put in the startup-sequence) so hopfully that sorted any possible stack issue. I rewrote the code to not do anything with GetAShape or drawing directly to bitmaps, removed palette stuff, double buffering stuff, and tried to get to the bare minimum necessary to blit something. Same results - one frame it draws then HALT3. Updated code: Code: ;; Play nicely with WB WBStartup ;; Everything is a WORD unless otherwise stated DEFTYPE .w ;; Get a shape #SH_1 = 1 LoadShape #SH_1, "testshape.ilbm" ;; GO BLITZ MODE BLITZ ;; Not entirely sure what these do but needed to control the screen ;; Set up a CopList, low-res, 2 bitplane #CL_1 = 0 InitCopList #CL_1, $002 CreateDisplay #CL_1 ;; Allocate the bitmap #BM_DISP1 = 0 BitMap #BM_DISP1,320,256,2 ;; Do until mouse press While Joyb(0)=0 Use BitMap #BM_DISP1 ;; Blit Blit #SH_1, 0, 0 ;; Display it VWait DisplayBitMap #CL_1, #BM_DISP1 Wend End I just don't see what I'm doing wrong. I comment out the blit and it ran fine (drawing a blank bitmap). The problem appears to be the blit (or qblit - same result).