some code for loading CPU test from SD card

src/zvm_m65/zvm_cputest.s

@@ -0,0 +1,82 @@
+
+;
+; Z80 Virtual Machine CPU test
+;
+
+
+ZVM_cputest:
+
+	; Copy file name to RAM
+
+	ldx #$FF
+
+@loop1:
+
+	inx
+	lda ZVM_filename_Z80TEST, x
+	sta BUF, x
+	bne @loop1
+
+	; Set Z80TEST.COM file name
+
+	ldy #>BUF
+	ldx #<BUF
+	lda #$2E                           ; dos_setname
+	sta HTRAP00
+	+nop                               ; required by hypervisor
+	bcc @end
+
+	; Try to find the file
+
+	lda #$34
+	sta HTRAP00
+	+nop
+	bcc @end
+
+	jsr PRIMM
+	!pet "Loading 'Z80TEST.COM'... ", 0
+
+	; Open the file
+
+	lda #$00
+	sta HTRAP00
+	+nop
+	
+	lda #$18
+	sta HTRAP00
+	+nop
+
+	; Select SD card buffer
+
+	lda #$80
+	tsb $D689 ; XXX invent name for the register
+
+	; Read sectors
+
+@loop2:
+
+	lda #$1A
+	sta HTRAP00
+	+nop
+
+	; .X (low byte) and .Y (high byte) contain number of bytes read
+
+	; XXX copy data from buffer at $FFD6E00
+
+
+
+	; XXX finish the implementation
+
+
+@end:
+
+	rts
+
+
+
+
+
+
+ZVM_filename_Z80TEST:
+
+	!pet "z80test.com", 0