diff --git a/src/mame/drivers/interpro.cpp b/src/mame/drivers/interpro.cpp
index 322c5e141dc..094d31b9c49 100644
--- a/src/mame/drivers/interpro.cpp
+++ b/src/mame/drivers/interpro.cpp
@@ -463,9 +463,10 @@ static MACHINE_CONFIG_START(ip2800, interpro_state)
 	MCFG_INTERPRO_IOGA_ADD(INTERPRO_IOGA_TAG)
 	MCFG_INTERPRO_IOGA_NMI_CB(INPUTLINE(INTERPRO_CPU_TAG, INPUT_LINE_NMI))
 	MCFG_INTERPRO_IOGA_IRQ_CB(INPUTLINE(INTERPRO_CPU_TAG, INPUT_LINE_IRQ0))
-
-	// use callbacks to tell the ioga what the dma read and write methods of each device are
-	// MCFG_INTERPRO_IOGA_DMA_CALLBACK(channel, n82077aa_device, dma_r, dma_w)
+	//MCFG_INTERPRO_IOGA_DMA_CB(IOGA_DMA_CHANNEL_PLOTTER, unknown)
+	//MCFG_INTERPRO_IOGA_DMA_CB(IOGA_DMA_CHANNEL_SCSI, DEVREAD8(INTERPRO_SCSI_TAG, ncr539x_device, dma_read_data), DEVWRITE8(INTERPRO_SCSI_TAG, ncr539x_device, dma_write_data))
+	MCFG_INTERPRO_IOGA_DMA_CB(IOGA_DMA_CHANNEL_FLOPPY, DEVREAD8(INTERPRO_FDC_TAG, n82077aa_device, mdma_r), DEVWRITE8(INTERPRO_FDC_TAG, n82077aa_device, mdma_w))
+	MCFG_INTERPRO_IOGA_DMA_CB(IOGA_DMA_CHANNEL_SERIAL, DEVREAD8(INTERPRO_SCC1_TAG, z80scc_device, da_r), DEVWRITE8(INTERPRO_SCC1_TAG, z80scc_device, da_w))
 
 MACHINE_CONFIG_END
 
diff --git a/src/mame/machine/interpro_ioga.cpp b/src/mame/machine/interpro_ioga.cpp
index 30030ecf87a..2475cd9c775 100644
--- a/src/mame/machine/interpro_ioga.cpp
+++ b/src/mame/machine/interpro_ioga.cpp
@@ -35,17 +35,25 @@ const device_type INTERPRO_IOGA = &device_creator<interpro_ioga_device>;
 interpro_ioga_device::interpro_ioga_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
 	: device_t(mconfig, INTERPRO_IOGA, "InterPro IOGA", tag, owner, clock, "ioga", __FILE__),
 	m_out_nmi_func(*this),
-	m_out_int_func(*this)
-{
+	m_out_int_func(*this),
+	m_dma_r_func{ { *this }, { *this }, { *this }, { *this } },
+	m_dma_w_func{ { *this }, { *this }, { *this }, { *this } }
+	{
 }
 
 void interpro_ioga_device::device_start()
 {
 	// resolve callbacks
+	m_out_nmi_func.resolve();
 	m_out_int_func.resolve();
 
+	for (auto & r : m_dma_r_func)
+		r.resolve_safe(0xff);
+
+	for (auto & w : m_dma_w_func)
+		w.resolve();
+
 	m_cpu = machine().device<cpu_device>("cpu");
-	m_fdc = machine().device<upd765_family_device>("fdc");
 
 	// allocate ioga timers
 	m_timer[0] = timer_alloc(IOGA_TIMER_0);
@@ -164,7 +172,7 @@ void interpro_ioga_device::device_timer(emu_timer &timer, device_timer_id id, in
 	{
 		address_space &space = m_cpu->space(AS_PROGRAM);
 
-		space.write_byte(m_fdc_dma[0]++, m_fdc->dma_r());
+		space.write_byte(m_fdc_dma[0]++, m_dma_r_func[IOGA_DMA_CHANNEL_FLOPPY]());
 		if (--m_fdc_dma[2])
 			m_dma_timer->adjust(attotime::from_usec(10));
 		else
diff --git a/src/mame/machine/interpro_ioga.h b/src/mame/machine/interpro_ioga.h
index 2035fd1e4b9..3a6fc8cebb7 100644
--- a/src/mame/machine/interpro_ioga.h
+++ b/src/mame/machine/interpro_ioga.h
@@ -7,7 +7,6 @@
 #define INTERPRO_IOGA_H_
 
 #include "emu.h"
-#include "machine/upd765.h"
 
 #define MCFG_INTERPRO_IOGA_ADD(_tag) \
 	MCFG_DEVICE_ADD(_tag, INTERPRO_IOGA, 0)
@@ -18,6 +17,10 @@
 #define MCFG_INTERPRO_IOGA_IRQ_CB(_out_int) \
 	devcb = &interpro_ioga_device::static_set_out_int_callback(*device, DEVCB_##_out_int);
 
+#define MCFG_INTERPRO_IOGA_DMA_CB(_channel, _dma_r, _dma_w) \
+	devcb = &interpro_ioga_device::static_set_dma_r_callback(*device, _channel, DEVCB_##_dma_r); \
+	devcb = &interpro_ioga_device::static_set_dma_w_callback(*device, _channel, DEVCB_##_dma_w);
+
 // timer 0 seem to be a 60Hz cycle
 #define IOGA_TIMER0_IRQ     14
 
@@ -42,6 +45,12 @@
 // FIXME: hack for forced interrupts
 #define IOGA_INTERRUPT_FORCED          0x8000
 
+#define IOGA_DMA_CHANNELS 4
+#define IOGA_DMA_CHANNEL_PLOTTER 0
+#define IOGA_DMA_CHANNEL_SCSI    1
+#define IOGA_DMA_CHANNEL_FLOPPY  2
+#define IOGA_DMA_CHANNEL_SERIAL  3
+
 class interpro_ioga_device : public device_t
 {
 public:
@@ -51,6 +60,9 @@ public:
 	template<class _Object> static devcb_base &static_set_out_nmi_callback(device_t &device, _Object object) { return downcast<interpro_ioga_device &>(device).m_out_nmi_func.set_callback(object); }
 	template<class _Object> static devcb_base &static_set_out_int_callback(device_t &device, _Object object) { return downcast<interpro_ioga_device &>(device).m_out_int_func.set_callback(object); }
 
+	template<class _Object> static devcb_base &static_set_dma_r_callback(device_t &device, int channel, _Object object) { return downcast<interpro_ioga_device &>(device).m_dma_r_func[channel].set_callback(object); }
+	template<class _Object> static devcb_base &static_set_dma_w_callback(device_t &device, int channel, _Object object) { return downcast<interpro_ioga_device &>(device).m_dma_w_func[channel].set_callback(object); }
+
 	virtual DECLARE_ADDRESS_MAP(map, 8);
 
 	// external interrupt lines
@@ -122,8 +134,8 @@ private:
 	devcb_write_line m_out_nmi_func;
 	devcb_write_line m_out_int_func;
 
-	// a hack to get hold of the dma devices
-	upd765_family_device *m_fdc;
+	devcb_read8 m_dma_r_func[IOGA_DMA_CHANNELS];
+	devcb_write8 m_dma_w_func[IOGA_DMA_CHANNELS];
 
 	bool m_irq_active;
 	uint32_t m_irq_current;