misc/cv1k.cpp, misc/nexus3d.cpp: Migrated to use newer machine/nandflash.cpp Flash memory emulation. (#11708)

* machine/nandflash.cpp: Only reset page address on read or program command.
* machine/nandflash.cpp: Added Samsung K9F1G08U0M and K9F2G08U0M.
* Removed now-unused machine/serflash.cpp.

Author: buffis

scripts/src/machine.lua

@@ -3311,18 +3311,6 @@ if (MACHINES["SENSORBOARD"]~=null) then
 	}
 end
 
----------------------------------------------------
---
---@src/devices/machine/serflash.h,MACHINES["SERFLASH"] = true
----------------------------------------------------
-
-if (MACHINES["SERFLASH"]~=null) then
-	files {
-		MAME_DIR .. "src/devices/machine/serflash.cpp",
-		MAME_DIR .. "src/devices/machine/serflash.h",
-	}
-end
-
 ---------------------------------------------------
 --
 --@src/devices/machine/smc91c9x.h,MACHINES["SMC91C9X"] = true

src/devices/machine/nandflash.cpp

@@ -25,7 +25,9 @@ DEFINE_DEVICE_TYPE(SAMSUNG_K9F5608U0DJ, samsung_k9f5608u0dj_device, "samsung_k9f
 DEFINE_DEVICE_TYPE(SAMSUNG_K9F5608U0B,  samsung_k9f5608u0b_device,  "samsung_k9f5608u0b",  "Samsung K9F5608U0B")
 DEFINE_DEVICE_TYPE(SAMSUNG_K9F2808U0B,  samsung_k9f2808u0b_device,  "samsung_k9f2808u0b",  "Samsung K9F2808U0B")
 DEFINE_DEVICE_TYPE(SAMSUNG_K9F1G08U0B,  samsung_k9f1g08u0b_device,  "samsung_k9f1g08u0b",  "Samsung K9F1G08U0B")
+DEFINE_DEVICE_TYPE(SAMSUNG_K9F1G08U0M,  samsung_k9f1g08u0m_device,  "samsung_k9f1g08u0m",  "Samsung K9F1G08U0M")
 DEFINE_DEVICE_TYPE(SAMSUNG_K9LAG08U0M,  samsung_k9lag08u0m_device,  "samsung_k9lag08u0m",  "Samsung K9LAG08U0M")
+DEFINE_DEVICE_TYPE(SAMSUNG_K9F2G08U0M,  samsung_k9f2g08u0m_device,  "samsung_k9f2g08u0m",  "Samsung K9F2G08U0M")
 
 nand_device::nand_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
 	: nand_device(mconfig, NAND, tag, owner, clock)
@@ -128,6 +130,23 @@ samsung_k9f1g08u0b_device::samsung_k9f1g08u0b_device(const machine_config &mconf
 	m_sequential_row_read = 0;
 }
 
+samsung_k9f1g08u0m_device::samsung_k9f1g08u0m_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+	: nand_device(mconfig, SAMSUNG_K9F1G08U0M, tag, owner, clock)
+{
+	m_id_len = 4;
+	m_id[0] = 0xec;
+	m_id[1] = 0xf1;
+	m_id[2] = 0x00;
+	m_id[3] = 0x15;
+	m_page_data_size = 2048;
+	m_page_total_size = 2048 + 64;
+	m_log2_pages_per_block = compute_log2(64);
+	m_num_pages = 64 * 1024;
+	m_col_address_cycles = 2;
+	m_row_address_cycles = 2;
+	m_sequential_row_read = 0;
+}
+
 samsung_k9lag08u0m_device::samsung_k9lag08u0m_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
 	: nand_device(mconfig, SAMSUNG_K9LAG08U0M, tag, owner, clock)
 {
@@ -146,6 +165,23 @@ samsung_k9lag08u0m_device::samsung_k9lag08u0m_device(const machine_config &mconf
 	m_sequential_row_read = 0;
 }
 
+samsung_k9f2g08u0m_device::samsung_k9f2g08u0m_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+	: nand_device(mconfig, SAMSUNG_K9F2G08U0M, tag, owner, clock)
+{
+	m_id_len = 4;
+	m_id[0] = 0xec;
+	m_id[1] = 0xda;
+	m_id[2] = 0x00;
+	m_id[3] = 0x15;
+	m_page_data_size = 2048;
+	m_page_total_size = 2048 + 64;
+	m_log2_pages_per_block = compute_log2(64);
+	m_num_pages = 128 * 1024;
+	m_col_address_cycles = 2;
+	m_row_address_cycles = 3;
+	m_sequential_row_read = 0;
+}
+
 void nand_device::device_start()
 {
 	m_data_uid_ptr = nullptr; // smartmed cruft
@@ -242,7 +278,6 @@ void nand_device::command_w(uint8_t data)
 	case 0x00: // Read (1st cycle)
 		m_mode = SM_M_READ;
 		m_pointer_mode = SM_PM_A;
-		m_page_addr = 0;
 		m_addr_load_ptr = 0;
 		break;
 	case 0x01:
@@ -255,7 +290,6 @@ void nand_device::command_w(uint8_t data)
 		{
 			m_mode = SM_M_READ;
 			m_pointer_mode = SM_PM_B;
-			m_page_addr = 0;
 			m_addr_load_ptr = 0;
 		}
 		break;
@@ -269,13 +303,11 @@ void nand_device::command_w(uint8_t data)
 		{
 			m_mode = SM_M_READ;
 			m_pointer_mode = SM_PM_C;
-			m_page_addr = 0;
 			m_addr_load_ptr = 0;
 		}
 		break;
 	case 0x80: // Page Program (1st cycle)
 		m_mode = SM_M_PROGRAM;
-		m_page_addr = 0;
 		m_addr_load_ptr = 0;
 		m_program_byte_count = 0;
 		memset(m_pagereg.get(), 0xff, m_page_total_size);
@@ -432,6 +464,10 @@ void nand_device::address_w(uint8_t data)
 		break;
 	case SM_M_READ:
 	case SM_M_PROGRAM:
+		if (m_addr_load_ptr == 0)
+		{
+			m_page_addr = 0;
+		}
 		if ((m_addr_load_ptr == 0) && (m_col_address_cycles == 1))
 		{
 			switch (m_pointer_mode)

src/devices/machine/nandflash.h

@@ -130,19 +130,33 @@ class samsung_k9f1g08u0b_device : public nand_device
 	samsung_k9f1g08u0b_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
 };
 
+class samsung_k9f1g08u0m_device : public nand_device
+{
+public:
+	samsung_k9f1g08u0m_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
+};
+
 class samsung_k9lag08u0m_device : public nand_device
 {
 public:
 	samsung_k9lag08u0m_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
 };
 
+class samsung_k9f2g08u0m_device : public nand_device
+{
+public:
+	samsung_k9f2g08u0m_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
+};
+
 // device type definition
 DECLARE_DEVICE_TYPE(NAND, nand_device)
 DECLARE_DEVICE_TYPE(SAMSUNG_K9F5608U0D, samsung_k9f5608u0d_device)
 DECLARE_DEVICE_TYPE(SAMSUNG_K9F5608U0DJ, samsung_k9f5608u0dj_device)
 DECLARE_DEVICE_TYPE(SAMSUNG_K9F5608U0B, samsung_k9f5608u0b_device)
 DECLARE_DEVICE_TYPE(SAMSUNG_K9F2808U0B, samsung_k9f2808u0b_device)
 DECLARE_DEVICE_TYPE(SAMSUNG_K9F1G08U0B, samsung_k9f1g08u0b_device)
+DECLARE_DEVICE_TYPE(SAMSUNG_K9F1G08U0M, samsung_k9f1g08u0m_device)
 DECLARE_DEVICE_TYPE(SAMSUNG_K9LAG08U0M, samsung_k9lag08u0m_device)
+DECLARE_DEVICE_TYPE(SAMSUNG_K9F2G08U0M, samsung_k9f2g08u0m_device) 
 
 #endif // MAME_MACHINE_NANDFLASH_H