X-Git-Url: https://git.rrq.au/?a=blobdiff_plain;f=memory.asm;h=a20c438971de084a45e52219c153a79e9a556753;hb=6bc4412f0b30989d7e4a4621a0124ada694d448c;hp=4fe4772f76c38b3652e4308b1941ca1871541b27;hpb=dde72a74dda4836bbce74d39bf869ac3b0c0cef1;p=rrq%2Frrqforth.git

diff --git a/memory.asm b/memory.asm
index 4fe4772..a20c438 100644
--- a/memory.asm
+++ b/memory.asm
@@ -70,9 +70,9 @@
 	;; ( addr -- v )
 	;; Load the (unsigned) byte v from address addr.
 	pop rax
-	mov bl,[rax]
-	push 0
-	mov [rsp],bl
+	xor rbx,rbx
+	mov bl,byte [rax]
+	push rbx
 	next
 	
 	WORD p_Cput, 'C!',fasm
@@ -83,6 +83,40 @@
 	mov byte [rax], bl
 	next
 
+	WORD p_Wget, 'W@',fasm
+	;; ( addr -- v )
+	;; Load the (unsigned) double-byte v from address addr.
+	pop rax
+	xor rbx,rbx
+	mov bx,word [rax]
+	push rbx
+	next
+	
+	WORD p_Wput, 'W!',fasm
+	;; ( v addr -- )
+	;; Store byte value v at address addr.
+	pop rax
+	pop rbx
+	mov word [rax], bx
+	next
+
+	WORD p_Dget, 'D@',fasm
+	;; ( addr -- v )
+	;; Load the (unsigned) double-byte v from address addr.
+	pop rax
+	xor rbx,rbx
+	mov ebx,dword [rax]
+	push rbx
+	next
+	
+	WORD p_Dput, 'D!',fasm
+	;; ( v addr -- )
+	;; Store byte value v at address addr.
+	pop rax
+	pop rbx
+	mov dword [rax], ebx
+	next
+
 	WORD p_2get, '2@',fasm
 	;; ( addr -- v2 v1 )
 	;; Load the cell pair {v1,v2} from address addr.
@@ -127,7 +161,7 @@ p_erase_last:
 	;; Add n to the value at addr.
 	pop rbx
 	pop rax
-	add [rax],rbx
+	add qword [rax],rbx
 	next
 
 	WORD p_shift_left, '<<',fasm