skeleton/pv9234.cpp: hookup stub NS16550, more notes

src/mame/skeleton/pv9234.cpp

@@ -8,33 +8,60 @@ PowerVu D9234 STB (c) 1997 Scientific Atlanta
 
 References:
 - http://www.vetrun.net/forums/showthread.php?t=395
-- http://colibri.net63.net/powervu.htm
+- https://web.archive.org/web/20080203175218/http://www.growl.de/d9234/
-- http://www.growl.de/d9234/
 
 TODO:
 - everything, including PCB pictures and user manual;
 - Probably shared with other PowerVu DVB-S STB models;
+- Flash ROM is (2x? 4x?) AT29C256 according to an evasive pic;
+- $3f000 area should be bootstrap code, inits UART from there?
 
 Front Panel:
-- On/standby / Signal on left
+- On/Standby | Signal/Menu on the left;
-- arrow keys with select in the middle, next to DVB logo
+- arrow keys with select in the middle, next to DVB logo;
+- PowerVu Conditional Access slot, on the right;
 
 Back Panel:
-- CH3 / CH4 dip;
+- CH3 / CH4 dip, HF modulator (US standard);
-- Ant In and Tv Out UHF connectors, near composite audio/video jacks
+- Ant In and Tv Out VHF/UHF connectors, near composite audio/video jacks;
-- Satellite LNB PWR +13/+19V 250mA
+- Satellite LNB PWR +13/+19V 250mA;
 - LNB PWR ON / OFF dip;
-- AC IN, 100V-240V, 50/60Hz
+- AC IN, 100V-240V, 50/60Hz;
+According to the Quick Setup Guide, can have following optional slots:
+- S-Video Out;
+- DE-9 Wideband Data and/or DA-25 Expansion Port;
 
 ===================================================================================================
 
-Meant for payTV providers to decrypt signals from the satellite and pump
+This is the serial output to a terminal, used for debugging.
-them out on a local cable network. The powervu encryption is very secure.
+The boot process goes something like this:
+
+Start
+
+Config: 0x00001080 (Max Config: 00003C80)
+MV 00000004.00000003
+DL Avail
+IOP Com. O.K. 00000004
+Check CRC ...
+CRC O.K.
+Launch App
+**************
+* Ver 2.05 *
+**************
+Compiled by: FURLANO
+Date & time: Nov 3 1997, 15:34:29
+All printing enabled. Press space bar to toggle on/off.
+Time stamping enabled. Press 't' to turn on/off.
+Press 'o' to toggle printing of MPEG Xport error messages.
 
 **************************************************************************************************/
 
 #include "emu.h"
+
+#include "bus/rs232/rs232.h"
 #include "cpu/arm7/arm7.h"
+#include "machine/ins8250.h"
+
 #include "emupal.h"
 #include "screen.h"
 
@@ -54,9 +81,7 @@ public:
 	void pv9234(machine_config &config);
 
 private:
-	void debug_w(uint32_t data);
 	void debug1_w(uint32_t data);
-	void debug2_w(uint32_t data);
 
 	uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
 
@@ -79,37 +104,6 @@ uint32_t pv9234_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap
 }
 
 
-/*
-This is the serial output to a terminal, used for debugging.
-The boot process goes something like this:
-
-Start
-
-Config: 0x00001080 (Max Config: 00003C80)
-MV 00000004.00000003
-DL Avail
-IOP Com. O.K. 00000004
-Check CRC ...
-CRC O.K.
-Launch App
-**************
-* Ver 2.05 *
-**************
-Compiled by: FURLANO
-Date & time: Nov 3 1997, 15:34:29
-All printing enabled. Press space bar to toggle on/off.
-Time stamping enabled. Press 't' to turn on/off.
-Press 'o' to toggle printing of MPEG Xport error messages.
-*/
-void pv9234_state::debug_w(uint32_t data)
-{
-	if (data)
-	{
-		//printf("%02x %c\n",data,data); // this prints 'Start' to the console.
-		logerror("debug=%02x %c\n",data,data);
-	}
-}
-
 void pv9234_state::debug1_w(uint32_t data)
 {
 	uint8_t i,j;
@@ -126,25 +120,30 @@ void pv9234_state::debug1_w(uint32_t data)
 	}
 }
 
-void pv9234_state::debug2_w(uint32_t data)
-{
-	if (data)
-		logerror("debug2=%02x\n",data); // ignore the huge amount of zeroes here
-}
-
 void pv9234_state::main_map(address_map &map)
 {
-	map(0x00000000, 0x0007ffff).rom().region("maincpu", 0); //FLASH ROM!
+	//map.unmap_value_high();
+	// TODO: flash ROM
+	map(0x00000000, 0x0007ffff).rom().region("maincpu", 0);
 	// map(0x00000000, 0x00000033).w(FUNC(pv9234_state::)); something
 	// map(0x00000044, 0x00000047).w(FUNC(pv9234_state::));
 	// map(0x00000060, 0x0000006b).w(FUNC(pv9234_state::));
 	// map(0x00007000, 0x00007003).w(FUNC(pv9234_state::));
 	// map(0x00008000, 0x00008003).w(FUNC(pv9234_state::));
+	map(0x00008000, 0x000080ff).unmaprw();
 	map(0x00008014, 0x00008017).w(FUNC(pv9234_state::debug1_w));
 	// map(0x00008020, 0x00008027).w(FUNC(pv9234_state::));
-	map(0x000080c0, 0x000080c3).w(FUNC(pv9234_state::debug2_w));
+	map(0x000080c0, 0x000080df).rw("uart", FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w)).umask32(0x000000ff);
-	map(0x000080cc, 0x000080cf).w(FUNC(pv9234_state::debug_w));
+	map(0x000080cc, 0x000080cc).lw8(
-	// map(0x000080d0, 0x000080d3).w(FUNC(pv9234_state::));
+		NAME([this] (offs_t offset, u8 data) {
+			if (data)
+			{
+				//printf("%02x %c\n",data,data); // this prints 'Start' to the console.
+				logerror("debug=%02x %c\n",data,data);
+			}
+		})
+	);
+
 	map(0x0003e000, 0x0003efff).ram().share("p_ram");
 	map(0x00080000, 0x00087fff).mirror(0x78000).ram().share("share1");//mirror is a guess, writes a prg at 0xc0200 then it jumps at b0200 (!)
 	map(0xe0000000, 0xe0007fff).mirror(0x0fff8000).ram().share("share1");
@@ -166,11 +165,9 @@ void pv9234_state::machine_reset()
 
 void pv9234_state::pv9234(machine_config &config)
 {
-	/* basic machine hardware */
+	ARM7(config, m_maincpu, 4915000); // TODO: unknown type, VLSI branded?
-	ARM7(config, m_maincpu, 4915000); // TODO: unknown type
 	m_maincpu->set_addrmap(AS_PROGRAM, &pv9234_state::main_map);
 
-	/* video hardware */
 	screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
 	screen.set_refresh_hz(60);
 	screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
@@ -179,10 +176,25 @@ void pv9234_state::pv9234(machine_config &config)
 	screen.set_screen_update(FUNC(pv9234_state::screen_update));
 	screen.set_palette("palette");
 
+	// TODO: wideband DE-9 port
+
+	// TODO: actually NS16550A, uses DA-25 port for a non-standard 8P1 125k baud rate
+	NS16550(config, "uart", 8_MHz_XTAL);
+//	uart.out_tx_callback().set("serial", FUNC(rs232_port_device::write_txd));
+//	uart.out_dtr_callback().set("serial", FUNC(rs232_port_device::write_dtr));
+//	uart.out_rts_callback().set("serial", FUNC(rs232_port_device::write_rts));
+//
+//	rs232_port_device &serial(RS232_PORT(config, "serial", default_rs232_devices, "terminal"));
+//	serial.rxd_handler().set("uart", FUNC(ns16550_device::rx_w));
+//	serial.dcd_handler().set("uart", FUNC(ns16550_device::dcd_w));
+//	serial.dsr_handler().set("uart", FUNC(ns16550_device::dsr_w));
+//	serial.cts_handler().set("uart", FUNC(ns16550_device::cts_w));
+
+	// TODO: has a Philips SAA-branded chip on the evasive PCB picture
+
 	PALETTE(config, "palette", palette_device::MONOCHROME);
 }
 
-/* ROM definition */
 ROM_START( pv9234 )
 	ROM_REGION32_LE( 0x80000, "maincpu", ROMREGION_ERASE00 )
 	ROM_LOAD16_BYTE( "u19.bin", 0x00000, 0x20000, CRC(1e06b0c8) SHA1(f8047f7127919e73675375578bb9fcc0eed2178e))
@@ -193,5 +205,6 @@ ROM_END
 
 } // anonymous namespace
 
-
+// PowerVu D9223 Commercial Satellite Receiver
+// PowerVu D9225 Headend Satellite Receiver
 SYST( 1997, pv9234, 0,      0,      pv9234,  pv9234, pv9234_state, empty_init, "Scientific Atlanta", "PowerVu D9234 Business Satellite Receiver", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)