uxn

commit f7506a41c7dd31f4e48000dd798f04e069ebf68e
parent d343865471d5bf0b55e592f2a7fb8a4e12f5b624
Author: Andrew Alderwick <andrew@alderwick.co.uk>
Date:   Tue, 27 Apr 2021 21:10:58 +0100

Added stack pointer position readouts to system device

Diffstat:
M
src/emulator.c
 | 
10
+++++++---
M
src/uxn.c
 | 
1
+
M
src/uxn.h
 | 
1
+

3 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/src/emulator.c b/src/emulator.c
@@ -193,9 +193,13 @@ doctrl(Uxn *u, SDL_Event *event, int z)
 void
 system_talk(Device *d, Uint8 b0, Uint8 w)
 {
-	if(!w) return;
-	putcolors(&ppu, &d->dat[0x8]);
-	reqdraw = 1;
+	if(!w) {
+		d->dat[0x2] = d->u->wst.ptr;
+		d->dat[0x3] = d->u->rst.ptr;
+	} else {
+		putcolors(&ppu, &d->dat[0x8]);
+		reqdraw = 1;
+	}
 	(void)b0;
 }
 
diff --git a/src/uxn.c b/src/uxn.c
@@ -183,6 +183,7 @@ portuxn(Uxn *u, Uint8 id, char *name, void (*talkfn)(Device *d, Uint8 b0, Uint8 
 {
 	Device *d = &u->dev[id];
 	d->addr = id * 0x10;
+	d->u = u;
 	d->mem = u->ram.dat;
 	d->talk = talkfn;
 	printf("Device added #%02x: %s, at 0x%04x \n", id, name, d->addr);
diff --git a/src/uxn.h b/src/uxn.h
@@ -31,6 +31,7 @@ typedef struct {
 struct Uxn;
 
 typedef struct Device {
+	struct Uxn *u;
 	Uint8 addr, dat[16], *mem;
 	void (*talk)(struct Device *d, Uint8, Uint8);
 } Device;