diff --git a/src/mii.h b/src/mii.h
index 07153d8..ba7ff41 100644
--- a/src/mii.h
+++ b/src/mii.h
@@ -10,6 +10,7 @@
 #include <stdint.h>
 #include <stdbool.h>
 
+#include "mii_types.h"
 #include "mii_65c02.h"
 #include "mii_dd.h"
 #include "mii_bank.h"
@@ -17,6 +18,7 @@
 #include "mii_video.h"
 #include "mii_speaker.h"
 #include "mii_mouse.h"
+#include "mii_analog.h"
 
 enum {
 	MII_BANK_MAIN = 0,		// main 48K address space
@@ -76,12 +78,13 @@ typedef struct mii_trace_t {
 	uint32_t 	step_inst;
 } mii_trace_t;
 
+
 /*
  * principal emulator state, for a faceless emulation
  */
 typedef struct mii_t {
 	unsigned int	state;
-	__uint128_t		cycles;
+	mii_cycles_t	cycles;
 	/* this is the video frame/VBL rate vs 60hz, default to 1.0 */
 	float			speed;
 	float			speed_current; // calculated speed
@@ -121,6 +124,7 @@ typedef struct mii_t {
 	mii_speaker_t	speaker;
 	mii_mouse_t		mouse;
 	mii_dd_system_t	dd;
+	mii_analog_t	analog;
 } mii_t;
 
 enum {
diff --git a/src/mii_speaker.c b/src/mii_speaker.c
index aa376bf..c7ffa7b 100644
--- a/src/mii_speaker.c
+++ b/src/mii_speaker.c
@@ -156,7 +156,7 @@ mii_speaker_click(
 	// if we've gone past the end of the frame, switch to the next one
 	if (sample_index >= s->fsize) {
 		sample_index = sample_index % s->fsize;
-		__uint128_t newstart = s->mii->cycles - (sample_index * s->clk_per_sample);
+		mii_cycles_t newstart = s->mii->cycles - (sample_index * s->clk_per_sample);
 		s->findex = (s->findex + 1) % MII_SPEAKER_FRAME_COUNT;
 		f = &s->frame[s->findex];
 		f->start = newstart;
diff --git a/src/mii_speaker.h b/src/mii_speaker.h
index a9995cc..37a2a76 100644
--- a/src/mii_speaker.h
+++ b/src/mii_speaker.h
@@ -17,8 +17,8 @@ struct snd_pcm_t;
 typedef int16_t mii_audio_sample_t;
 
 typedef struct mii_audio_frame_t {
-	__uint128_t	start;
-	uint16_t	fill;
+	mii_cycles_t	start;
+	uint16_t		fill;
 	mii_audio_sample_t *	audio;
 } mii_audio_frame_t;
 
diff --git a/src/mii_types.h b/src/mii_types.h
new file mode 100644
index 0000000..c6a45b1
--- /dev/null
+++ b/src/mii_types.h
@@ -0,0 +1,14 @@
+/*
+ * mii_types.h
+ *
+ * Copyright (C) 2023 Michel Pollet <buserror@gmail.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef __uint128_t mii_cycles_t;
diff --git a/src/mii_video.h b/src/mii_video.h
index dd5fc56..1be80df 100644
--- a/src/mii_video.h
+++ b/src/mii_video.h
@@ -8,9 +8,7 @@
 
 #pragma once
 
-#include <stdbool.h>
-#include <stdint.h>
-
+#include "mii_types.h"
 
 // TODO move VRAM stuff to somewhere else
 /*
@@ -32,14 +30,14 @@ enum {
 struct mii_t;
 
 typedef struct mii_video_t {
-		void *		state;	// protothread state in mii_video.c
-		uint8_t		line;	// current line
-		bool 		vbl_irq; // VBL IRQ emabled (set by mouse card)
-		__uint128_t	wait;	// 'wait until' cycle marker
-		uint32_t 	pixels[MII_VRAM_WIDTH * MII_VRAM_HEIGHT];
-		uint32_t	frame_count; // incremented every frame
-		uint32_t	frame_drawn;
-		uint8_t 	color_mode;	// color, green, amber
+		void *			state;	// protothread state in mii_video.c
+		uint8_t			line;	// current line
+		bool 			vbl_irq; // VBL IRQ emabled (set by mouse card)
+		mii_cycles_t	wait;	// 'wait until' cycle marker
+		uint32_t 		pixels[MII_VRAM_WIDTH * MII_VRAM_HEIGHT];
+		uint32_t		frame_count; // incremented every frame
+		uint32_t		frame_drawn;
+		uint8_t 		color_mode;	// color, green, amber
 } mii_video_t;
 
 bool