From 0a29cbef31992f15b4f5ade8d85bb097a7cf382f Mon Sep 17 00:00:00 2001
From: MooglyGuy <therealmogminer@gmail.com>
Date: Thu, 2 Jan 2020 12:13:43 +0100
Subject: [PATCH] -psion5.cpp: Added logging for SoC peripheral accesses based
 on WindEmu. [Ninji, Ryan Holtz]

---
 src/mame/drivers/psion5.cpp | 490 ++++++++++++++++++++++++++++++++++++
 1 file changed, 490 insertions(+)

diff --git a/src/mame/drivers/psion5.cpp b/src/mame/drivers/psion5.cpp
index 1addef2930e..15884f76400 100644
--- a/src/mame/drivers/psion5.cpp
+++ b/src/mame/drivers/psion5.cpp
@@ -36,6 +36,85 @@ protected:
 	virtual void machine_reset() override;
 
 private:
+	DECLARE_READ32_MEMBER(periphs_r);
+	DECLARE_WRITE32_MEMBER(periphs_w);
+
+	enum
+	{
+		REG_MEMCFG1   = 0x0000,
+		REG_MEMCFG2   = 0x0004,
+
+		REG_DRAMCFG   = 0x0100,
+
+		REG_LCDCTL    = 0x0200,
+		REG_LCDST     = 0x0204,
+		REG_LCD_DBAR1 = 0x0210,
+		REG_LCDT0     = 0x0220,
+		REG_LCDT1     = 0x0224,
+		REG_LCDT2     = 0x0228,
+
+		REG_PWRSR     = 0x0400,
+		REG_PWRCNT    = 0x0404,
+		REG_HALT      = 0x0408,
+		REG_STBY      = 0x040c,
+		REG_BLEOI     = 0x0410,
+		REG_MCEOI     = 0x0414,
+		REG_TEOI      = 0x0418,
+		REG_STFCLR    = 0x041c,
+		REG_E2EOI     = 0x0420,
+
+		REG_INTSR     = 0x0500,
+		REG_INTRSR    = 0x0504,
+		REG_INTENS    = 0x0508,
+		REG_INTENC    = 0x050c,
+		REG_INTTEST1  = 0x0514,
+		REG_INTTEST2  = 0x0518,
+
+		REG_PUMPCON   = 0x0900,
+
+		REG_CODR      = 0x0a00,
+		REG_CONFG     = 0x0a04,
+		REG_COLFG     = 0x0a08,
+		REG_COEOI     = 0x0a0c,
+		REG_COTEST    = 0x0a10,
+
+		REG_SSCR0     = 0x0b00,
+		REG_SSCR1     = 0x0b04,
+		REG_SSDR      = 0x0b0c,
+		REG_SSSR      = 0x0b14,
+
+		REG_TC1LOAD   = 0x0c00,
+		REG_TC1VAL    = 0x0c04,
+		REG_TC1CTRL   = 0x0c08,
+		REG_TC1EOI    = 0x0c0c,
+		REG_TC2LOAD   = 0x0c20,
+		REG_TC2VAL    = 0x0c24,
+		REG_TC2CTRL   = 0x0c28,
+		REG_TC2EOI    = 0x0c2c,
+
+		REG_BZCONT    = 0x0c40,
+
+		REG_RTCDRL    = 0x0d00,
+		REG_RTCDRU    = 0x0d04,
+		REG_RTCMRL    = 0x0d08,
+		REG_RTCMRU    = 0x0d0c,
+		REG_RTCEOI    = 0x0d10,
+
+		REG_PADR      = 0x0e00,
+		REG_PBDR      = 0x0e04,
+		REG_PCDR      = 0x0e08,
+		REG_PDDR      = 0x0e0c,
+		REG_PADDR     = 0x0e10,
+		REG_PBDDR     = 0x0e14,
+		REG_PCDDR     = 0x0e18,
+		REG_PDDDR     = 0x0e1c,
+		REG_PEDR      = 0x0e20,
+		REG_PEDDR     = 0x0e24,
+
+		REG_KSCAN     = 0x0e28,
+		REG_LCDMUX    = 0x0e2c
+	};
+
 	void main_map(address_map &map);
 
 	uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
@@ -51,9 +130,420 @@ void psion5_state::machine_reset()
 {
 }
 
+READ32_MEMBER(psion5_state::periphs_r)
+{
+	const uint32_t reg = offset << 2;
+	uint32_t data = 0;
+	switch (reg)
+	{
+		case REG_MEMCFG1:
+			logerror("%s: peripheral read, MEMCFG1 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_MEMCFG2:
+			logerror("%s: peripheral read, MEMCFG2 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_DRAMCFG:
+			logerror("%s: peripheral read, DRAMCFG = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_LCDCTL:
+			logerror("%s: peripheral read, LCDCTL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCDST:
+			logerror("%s: peripheral read, LCDST = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCD_DBAR1:
+			logerror("%s: peripheral read, LCD_DBAR1 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCDT0:
+			logerror("%s: peripheral read, LCDT0 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCDT1:
+			logerror("%s: peripheral read, LCDT1 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCDT2:
+			logerror("%s: peripheral read, LCDT2 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_PWRSR:
+			logerror("%s: peripheral read, PWRSR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PWRCNT:
+			logerror("%s: peripheral read, PWRCNT = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_HALT:
+			logerror("%s: peripheral read, HALT = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_STBY:
+			logerror("%s: peripheral read, STBY = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_BLEOI:
+			logerror("%s: peripheral read, BLEOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_MCEOI:
+			logerror("%s: peripheral read, MCEOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TEOI:
+			logerror("%s: peripheral read, TEOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_STFCLR:
+			logerror("%s: peripheral read, STFCLR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_E2EOI:
+			logerror("%s: peripheral read, E2EOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_INTSR:
+			logerror("%s: peripheral read, INTSR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_INTRSR:
+			logerror("%s: peripheral read, INTRSR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_INTENS:
+			logerror("%s: peripheral read, INTENS = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_INTENC:
+			logerror("%s: peripheral read, INTENC = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_INTTEST1:
+			logerror("%s: peripheral read, INTTEST1 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_INTTEST2:
+			logerror("%s: peripheral read, INTTEST2 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_PUMPCON:
+			logerror("%s: peripheral read, PUMPCON = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_CODR:
+			logerror("%s: peripheral read, CODR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_CONFG:
+			logerror("%s: peripheral read, CONFG = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_COLFG:
+			logerror("%s: peripheral read, COLFG = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_COEOI:
+			logerror("%s: peripheral read, COEOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_COTEST:
+			logerror("%s: peripheral read, COTEST = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_SSCR0:
+			logerror("%s: peripheral read, SSCR0 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_SSCR1:
+			logerror("%s: peripheral read, SSCR1 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_SSDR:
+			logerror("%s: peripheral read, SSDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_SSSR:
+			logerror("%s: peripheral read, SSSR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_TC1LOAD:
+			logerror("%s: peripheral read, TC1LOAD = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC1VAL:
+			logerror("%s: peripheral read, TC1VAL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC1CTRL:
+			logerror("%s: peripheral read, TC1CTRL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC1EOI:
+			logerror("%s: peripheral read, TC1EOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC2LOAD:
+			logerror("%s: peripheral read, TC2LOAD = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC2VAL:
+			logerror("%s: peripheral read, TC2VAL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC2CTRL:
+			logerror("%s: peripheral read, TC2CTRL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC2EOI:
+			logerror("%s: peripheral read, TC2EOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_BZCONT:
+			logerror("%s: peripheral read, BZCONT = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_RTCDRL:
+			logerror("%s: peripheral read, RTCDRL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_RTCDRU:
+			logerror("%s: peripheral read, RTCDRU = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_RTCMRL:
+			logerror("%s: peripheral read, RTCMRL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_RTCMRU:
+			logerror("%s: peripheral read, RTCMRU = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_RTCEOI:
+			logerror("%s: peripheral read, RTCEOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_PADR:
+			logerror("%s: peripheral read, PADR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PBDR:
+			logerror("%s: peripheral read, PBDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PCDR:
+			logerror("%s: peripheral read, PCDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PDDR:
+			logerror("%s: peripheral read, PDDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PADDR:
+			logerror("%s: peripheral read, PADDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PBDDR:
+			logerror("%s: peripheral read, PBDDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PCDDR:
+			logerror("%s: peripheral read, PCDDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PDDDR:
+			logerror("%s: peripheral read, PDDDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PEDR:
+			logerror("%s: peripheral read, PEDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PEDDR:
+			logerror("%s: peripheral read, PEDDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_KSCAN:
+			logerror("%s: peripheral read, KSCAN = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCDMUX:
+			logerror("%s: peripheral read, LCDMUX = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		default:
+			logerror("%s: peripheral read, Unknown = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+	}
+	return 0;
+}
+
+WRITE32_MEMBER(psion5_state::periphs_w)
+{
+	const uint32_t reg = offset << 2;
+	switch (reg)
+	{
+		case REG_MEMCFG1:
+			logerror("%s: peripheral write, MEMCFG1 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_MEMCFG2:
+			logerror("%s: peripheral write, MEMCFG2 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_DRAMCFG:
+			logerror("%s: peripheral write, DRAMCFG = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_LCDCTL:
+			logerror("%s: peripheral write, LCDCTL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCDST:
+			logerror("%s: peripheral write, LCDST = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCD_DBAR1:
+			logerror("%s: peripheral write, LCD_DBAR1 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCDT0:
+			logerror("%s: peripheral write, LCDT0 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCDT1:
+			logerror("%s: peripheral write, LCDT1 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCDT2:
+			logerror("%s: peripheral write, LCDT2 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_PWRSR:
+			logerror("%s: peripheral write, PWRSR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PWRCNT:
+			logerror("%s: peripheral write, PWRCNT = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_HALT:
+			logerror("%s: peripheral write, HALT = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_STBY:
+			logerror("%s: peripheral write, STBY = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_BLEOI:
+			logerror("%s: peripheral write, BLEOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_MCEOI:
+			logerror("%s: peripheral write, MCEOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TEOI:
+			logerror("%s: peripheral write, TEOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_STFCLR:
+			logerror("%s: peripheral write, STFCLR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_E2EOI:
+			logerror("%s: peripheral write, E2EOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_INTSR:
+			logerror("%s: peripheral write, INTSR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_INTRSR:
+			logerror("%s: peripheral write, INTRSR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_INTENS:
+			logerror("%s: peripheral write, INTENS = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_INTENC:
+			logerror("%s: peripheral write, INTENC = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_INTTEST1:
+			logerror("%s: peripheral write, INTTEST1 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_INTTEST2:
+			logerror("%s: peripheral write, INTTEST2 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_PUMPCON:
+			logerror("%s: peripheral write, PUMPCON = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_CODR:
+			logerror("%s: peripheral write, CODR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_CONFG:
+			logerror("%s: peripheral write, CONFG = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_COLFG:
+			logerror("%s: peripheral write, COLFG = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_COEOI:
+			logerror("%s: peripheral write, COEOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_COTEST:
+			logerror("%s: peripheral write, COTEST = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_SSCR0:
+			logerror("%s: peripheral write, SSCR0 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_SSCR1:
+			logerror("%s: peripheral write, SSCR1 = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_SSDR:
+			logerror("%s: peripheral write, SSDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_SSSR:
+			logerror("%s: peripheral write, SSSR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_TC1LOAD:
+			logerror("%s: peripheral write, TC1LOAD = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC1VAL:
+			logerror("%s: peripheral write, TC1VAL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC1CTRL:
+			logerror("%s: peripheral write, TC1CTRL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC1EOI:
+			logerror("%s: peripheral write, TC1EOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC2LOAD:
+			logerror("%s: peripheral write, TC2LOAD = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC2VAL:
+			logerror("%s: peripheral write, TC2VAL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC2CTRL:
+			logerror("%s: peripheral write, TC2CTRL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_TC2EOI:
+			logerror("%s: peripheral write, TC2EOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_BZCONT:
+			logerror("%s: peripheral write, BZCONT = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_RTCDRL:
+			logerror("%s: peripheral write, RTCDRL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_RTCDRU:
+			logerror("%s: peripheral write, RTCDRU = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_RTCMRL:
+			logerror("%s: peripheral write, RTCMRL = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_RTCMRU:
+			logerror("%s: peripheral write, RTCMRU = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_RTCEOI:
+			logerror("%s: peripheral write, RTCEOI = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_PADR:
+			logerror("%s: peripheral write, PADR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PBDR:
+			logerror("%s: peripheral write, PBDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PCDR:
+			logerror("%s: peripheral write, PCDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PDDR:
+			logerror("%s: peripheral write, PDDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PADDR:
+			logerror("%s: peripheral write, PADDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PBDDR:
+			logerror("%s: peripheral write, PBDDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PCDDR:
+			logerror("%s: peripheral write, PCDDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PDDDR:
+			logerror("%s: peripheral write, PDDDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PEDR:
+			logerror("%s: peripheral write, PEDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_PEDDR:
+			logerror("%s: peripheral write, PEDDR = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		case REG_KSCAN:
+			logerror("%s: peripheral write, KSCAN = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+		case REG_LCDMUX:
+			logerror("%s: peripheral write, LCDMUX = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+
+		default:
+			logerror("%s: peripheral write, Unknown = %08x & %08x\n", machine().describe_context(), data, mem_mask);
+			break;
+	}
+}
+
 void psion5_state::main_map(address_map &map)
 {
 	map(0x00000000, 0x009fffff).rom().region("maincpu", 0);
+	map(0x80000000, 0x80000fff).rw(FUNC(psion5_state::periphs_r), FUNC(psion5_state::periphs_w));
 	map(0xc0000000, 0xc03fffff).ram().mirror(0x1fc00000);
 }