Merge branch '86Box:master' into nec-v20

.github/workflows/cmake.yml

@@ -3,6 +3,9 @@ name: CMake
 on:
 
   push:
+    branches:
+    - master
+
     paths:
     - src/**
     - "**/CMakeLists.txt"
@@ -12,6 +15,9 @@ on:
     - "!**/Makefile*"
 
   pull_request:
+    branches:
+    - master
+
     paths:
     - src/**
     - "**/CMakeLists.txt"
@@ -25,7 +31,7 @@ jobs:
   msys2:
     name: MSYS2 ${{ matrix.build.name }} build (${{ matrix.environment.msystem }})
 
-    runs-on: windows-latest
+    runs-on: windows-2022
 
     defaults:
       run:
@@ -35,10 +41,10 @@ jobs:
       fail-fast: true
       matrix:
         build:
-        - name: Regular ODR
+#        - name: Regular ODR
-          slug: -ODR
+#          slug: -ODR
-          preset: regular
+#          preset: regular
-          target: install/strip
+#          target: install/strip
         - name: Debug ODR
           slug: -ODR-Debug
           preset: debug
@@ -47,10 +53,10 @@ jobs:
           slug: -ODR-Dev
           preset: experimental
           target: install
-        - name: Regular NDR
+#        - name: Regular NDR
-          slug: -NDR
+#          slug: -NDR
-          preset: regularndr
+#          preset: regularndr
-          target: install/strip
+#          target: install/strip
         - name: Debug NDR
           slug: -NDR-Debug
           preset: debugndr
@@ -68,8 +74,8 @@ jobs:
             prefix: mingw-w64-ucrt-x86_64
 #          - msystem: CLANG32
 #            prefix: mingw-w64-clang-i686
-          - msystem: CLANG64
+#          - msystem: CLANG64
-            prefix: mingw-w64-clang-x86_64
+#            prefix: mingw-w64-clang-x86_64
 
     steps:
     - uses: msys2/setup-msys2@v2
@@ -114,12 +120,12 @@ jobs:
       fail-fast: true
       matrix:
         build:
-        - name: Regular ODR
+#        - name: Regular ODR
-          slug: -ODR
+#          slug: -ODR
-          type: Release
+#          type: Release
-          dev-build: off
+#          dev-build: off
-          new-dynarec: off
+#          new-dynarec: off
-          strip: --strip
+#          strip: --strip
         - name: Debug ODR
           slug: -ODR-Debug
           type: Debug
@@ -130,12 +136,12 @@ jobs:
           type: Debug
           dev-build: on
           new-dynarec: off
-        - name: Regular NDR
+#        - name: Regular NDR
-          slug: -NDR
+#          slug: -NDR
-          type: Release
+#          type: Release
-          strip: --strip
+#          strip: --strip
-          dev-build: off
+#          dev-build: off
-          new-dynarec: on
+#          new-dynarec: on
         - name: Debug NDR
           slug: -NDR-Debug
           type: Debug
@@ -210,18 +216,18 @@ jobs:
   linux:
     name: "Linux GCC 11 (${{ matrix.build.name }} x86_64)"
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     strategy:
       fail-fast: true
       matrix:
         build:
-        - name: Regular ODR
+#        - name: Regular ODR
-          slug: -ODR
+#          slug: -ODR
-          type: Release
+#          type: Release
-          dev-build: off
+#          dev-build: off
-          new-dynarec: off
+#          new-dynarec: off
-          strip: --strip
+#          strip: --strip
         - name: Debug ODR
           slug: -ODR-Debug
           type: Debug
@@ -232,12 +238,12 @@ jobs:
           type: Debug
           dev-build: on
           new-dynarec: off
-        - name: Regular NDR
+#        - name: Regular NDR
-          slug: -NDR
+#          slug: -NDR
-          type: Release
+#          type: Release
-          strip: --strip
+#          strip: --strip
-          dev-build: off
+#          dev-build: off
-          new-dynarec: on
+#          new-dynarec: on
         - name: Debug NDR
           slug: -NDR-Debug
           type: Debug
@@ -280,12 +286,12 @@ jobs:
       fail-fast: true
       matrix:
         build:
-        - name: Regular ODR
+#        - name: Regular ODR
-          slug: -ODR
+#          slug: -ODR
-          type: Release
+#          type: Release
-          dev-build: off
+#          dev-build: off
-          new-dynarec: off
+#          new-dynarec: off
-          strip: --strip
+#          strip: --strip
         - name: Debug ODR
           slug: -ODR-Debug
           type: Debug
@@ -296,12 +302,12 @@ jobs:
           type: Debug
           dev-build: on
           new-dynarec: off
-        - name: Regular NDR
+#        - name: Regular NDR
-          slug: -NDR
+#          slug: -NDR
-          type: Release
+#          type: Release
-          strip: --strip
+#          strip: --strip
-          dev-build: off
+#          dev-build: off
-          new-dynarec: on
+#          new-dynarec: on
         - name: Debug NDR
           slug: -NDR-Debug
           type: Debug

CMakeLists.txt

@@ -31,7 +31,7 @@ if(MUNT_EXTERNAL)
 endif()
 
 project(86Box
-    VERSION 3.2.1
+    VERSION 3.3
     DESCRIPTION "Emulator of x86-based systems"
     HOMEPAGE_URL "https://86box.net"
     LANGUAGES C CXX)

src/device/isapnp.c

@@ -414,7 +414,7 @@ isapnp_write_addr(uint16_t addr, uint8_t val, void *priv)
 		if (!dev->key_pos) {
 			isapnp_log("ISAPnP: Key unlocked, putting cards to SLEEP\n");
 			while (card) {
-				if (card->enable && (card->state == PNP_STATE_WAIT_FOR_KEY))
+				if (card->enable && (card->enable != ISAPNP_CARD_NO_KEY) && (card->state == PNP_STATE_WAIT_FOR_KEY))
 					card->state = PNP_STATE_SLEEP;
 				card = card->next;
 			}
@@ -974,14 +974,12 @@ isapnp_enable_card(void *priv, uint8_t enable)
 
     /* Look for a matching card. */
     isapnp_card_t *card = dev->first_card;
-    uint8_t will_enable;
     while (card) {
 	if (card == priv) {
 		/* Enable or disable the card. */
-		will_enable = (enable >= ISAPNP_CARD_ENABLE);
+		if (!!enable ^ !!card->enable)
-		if (will_enable ^ card->enable)
 			card->state = (enable == ISAPNP_CARD_FORCE_CONFIG) ? PNP_STATE_CONFIG : PNP_STATE_WAIT_FOR_KEY;
-		card->enable = will_enable;
+		card->enable = enable;
 
 		/* Invalidate other references if we're disabling this card. */
 		if (!card->enable) {

src/include/86box/isapnp.h

@@ -28,7 +28,8 @@
 enum {
     ISAPNP_CARD_DISABLE = 0,
     ISAPNP_CARD_ENABLE = 1,
-    ISAPNP_CARD_FORCE_CONFIG /* cheat code for UMC UM8669F */
+    ISAPNP_CARD_FORCE_CONFIG, /* cheat code for UMC UM8669F */
+    ISAPNP_CARD_NO_KEY /* cheat code for Crystal CS423x */
 };
 
 

src/include/86box/snd_ad1848.h

@@ -23,6 +23,7 @@ enum {
     AD1848_TYPE_DEFAULT = 0,
     AD1848_TYPE_CS4248,
     AD1848_TYPE_CS4231,
+    AD1848_TYPE_CS4235,
     AD1848_TYPE_CS4236
 };
 
@@ -46,6 +47,10 @@ typedef struct {
 
     int16_t	buffer[SOUNDBUFLEN * 2];
     int		pos;
+
+    void	*cram_priv,
+		(*cram_write)(uint16_t addr, uint8_t val, void *priv);
+    uint8_t	(*cram_read)(uint16_t addr, void *priv);
 } ad1848_t;
 
 

src/include/86box/sound.h

@@ -135,6 +135,8 @@ extern const device_t wss_device;
 extern const device_t ncr_business_audio_device;
 
 /* Crystal CS423x */
+extern const device_t cs4235_device;
+extern const device_t cs4235_onboard_device;
 extern const device_t cs4236b_device;
 extern const device_t cs4237b_device;
 extern const device_t cs4238b_device;

src/include_make/86box/version.h

@@ -20,12 +20,12 @@
 #define EMU_NAME	"86Box"
 #define EMU_NAME_W	LSTR(EMU_NAME)
 
-#define EMU_VERSION	"3.2.1"
+#define EMU_VERSION	"3.3"
 #define EMU_VERSION_W	LSTR(EMU_VERSION)
-#define EMU_VERSION_EX	"3.21"
+#define EMU_VERSION_EX	"3.30"
 #define EMU_VERSION_MAJ	3
-#define EMU_VERSION_MIN	2
+#define EMU_VERSION_MIN	3
-#define EMU_VERSION_PATCH 1
+#define EMU_VERSION_PATCH 0
 
 #define EMU_BUILD_NUM	0
 

src/network/CMakeLists.txt

@@ -26,4 +26,4 @@ if(SLIRP_EXTERNAL)
 else()
     add_subdirectory(slirp)
     target_link_libraries(86Box slirp)
-endif()
+endif()

src/qt/qt_settingsnetwork.cpp

@@ -127,3 +127,13 @@ void SettingsNetwork::on_pushButtonConfigure_clicked() {
     DeviceConfig::ConfigureDevice(network_card_getdevice(ui->comboBoxAdapter->currentData().toInt()), 0, qobject_cast<Settings*>(Settings::settings));
 }
 
+
+void SettingsNetwork::on_comboBoxPcap_currentIndexChanged(int index)
+{
+    if (index < 0) {
+        return;
+    }
+
+    enableElements(ui);
+}
+

src/qt/qt_settingsnetwork.hpp

@@ -25,6 +25,8 @@ private slots:
     void on_comboBoxAdapter_currentIndexChanged(int index);
     void on_comboBoxNetwork_currentIndexChanged(int index);
 
+    void on_comboBoxPcap_currentIndexChanged(int index);
+
 private:
     Ui::SettingsNetwork *ui;
     int machineId = 0;

src/sound/snd_ad1848.c

@@ -16,7 +16,7 @@
  *
  *		Copyright 2008-2020 Sarah Walker.
  *		Copyright 2018-2020 TheCollector1995.
- *		Copyright 2021 RichardG.
+ *		Copyright 2021-2022 RichardG.
  */
 #include <stdio.h>
 #include <stdint.h>
@@ -56,7 +56,7 @@ ad1848_setdma(ad1848_t *ad1848, int dma)
 void
 ad1848_updatevolmask(ad1848_t *ad1848)
 {
-    if ((ad1848->type == AD1848_TYPE_CS4236) && ((ad1848->xregs[4] & 0x10) || ad1848->wten))
+    if ((ad1848->type >= AD1848_TYPE_CS4235) && ((ad1848->xregs[4] & 0x10) || ad1848->wten))
 	ad1848->wave_vol_mask = 0x3f;
     else
 	ad1848->wave_vol_mask = 0x7f;
@@ -69,7 +69,7 @@ ad1848_updatefreq(ad1848_t *ad1848)
     double freq;
     uint8_t set = 0;
 
-    if (ad1848->type == AD1848_TYPE_CS4236) {
+    if (ad1848->type >= AD1848_TYPE_CS4235) {
 	if (ad1848->xregs[11] & 0x20) {
 		freq = 16934400LL;
 		switch (ad1848->xregs[13]) {
@@ -134,7 +134,7 @@ ad1848_read(uint16_t addr, void *priv)
 				break;
 
 			case 18: case 19:
-				if (ad1848->type == AD1848_TYPE_CS4236) {
+				if (ad1848->type >= AD1848_TYPE_CS4235) {
 					if ((ad1848->xregs[4] & 0x14) == 0x14) /* FM remapping */
 						ret = ad1848->xregs[ad1848->index - 12]; /* real FM volume on registers 6 and 7 */
 					else if (ad1848->wten && !(ad1848->xregs[4] & 0x08)) /* wavetable remapping */
@@ -142,8 +142,14 @@ ad1848_read(uint16_t addr, void *priv)
 				}
 				break;
 
+			case 20: case 21:
+				/* Backdoor to the Control/RAM registers on CS4235. */
+				if ((ad1848->type == AD1848_TYPE_CS4235) && (ad1848->xregs[18] & 0x80))
+					ret = ad1848->cram_read(ad1848->index - 15, ad1848->cram_priv);
+				break;
+
 			case 23:
-				if ((ad1848->type == AD1848_TYPE_CS4236) && (ad1848->regs[23] & 0x08)) {
+				if ((ad1848->type >= AD1848_TYPE_CS4235) && (ad1848->regs[23] & 0x08)) {
 					if ((ad1848->xindex & 0xfe) == 0x00) /* remapped line volume */
 						ret = ad1848->regs[18 + ad1848->xindex];
 					else
@@ -174,7 +180,7 @@ ad1848_write(uint16_t addr, uint8_t val, void *priv)
 			ad1848->index = val & 0x1f; /* cs4231a extended mode enabled */
 		else
 			ad1848->index = val & 0x0f; /* ad1848/cs4248 mode TODO: some variants/clones DO NOT mirror, just ignore the writes? */
-		if (ad1848->type == AD1848_TYPE_CS4236)
+		if (ad1848->type >= AD1848_TYPE_CS4235)
 			ad1848->regs[23] &= ~0x08; /* clear XRAE */
 		ad1848->trd = val & 0x20;
 		ad1848->mce = val & 0x40;
@@ -183,7 +189,7 @@ ad1848_write(uint16_t addr, uint8_t val, void *priv)
 	case 1:
 		switch (ad1848->index) {
 			case 10:
-				if (ad1848->type != AD1848_TYPE_CS4236)
+				if (ad1848->type < AD1848_TYPE_CS4235)
 					break;
 				/* fall-through */
 
@@ -223,7 +229,7 @@ ad1848_write(uint16_t addr, uint8_t val, void *priv)
 				break;
 
 			case 18: case 19:
-				if (ad1848->type == AD1848_TYPE_CS4236) {
+				if (ad1848->type >= AD1848_TYPE_CS4235) {
 					if ((ad1848->xregs[4] & 0x14) == 0x14) { /* FM remapping */
 						ad1848->xregs[ad1848->index - 12] = val; /* real FM volume on extended registers 6 and 7 */
 						temp = 1;
@@ -265,12 +271,20 @@ ad1848_write(uint16_t addr, uint8_t val, void *priv)
 				}
 				break;
 
+			case 20: case 21:
+				/* Backdoor to the Control/RAM registers on CS4235. */
+				if ((ad1848->type == AD1848_TYPE_CS4235) && (ad1848->xregs[18] & 0x80)) {
+					ad1848->cram_write(ad1848->index - 15, val, ad1848->cram_priv);
+					val = ad1848->regs[ad1848->index];
+				}
+				break;
+
 			case 22:
 				updatefreq = 1;
 				break;
 
 			case 23:
-				if ((ad1848->type == AD1848_TYPE_CS4236) && ((ad1848->regs[12] & 0x60) == 0x60)) {
+				if ((ad1848->type >= AD1848_TYPE_CS4235) && ((ad1848->regs[12] & 0x60) == 0x60)) {
 					if (!(ad1848->regs[23] & 0x08)) { /* existing (not new) XRAE is clear */
 						ad1848->xindex = ((val & 0x04) << 2) | (val >> 4);
 						break;
@@ -327,7 +341,7 @@ ad1848_write(uint16_t addr, uint8_t val, void *priv)
 		if (updatefreq)
 			ad1848_updatefreq(ad1848);
 
-		if ((ad1848->type == AD1848_TYPE_CS4231) || (ad1848->type == AD1848_TYPE_CS4236)) { /* TODO: configure CD volume for CS4248/AD1848 too */
+		if (ad1848->type >= AD1848_TYPE_CS4231) { /* TODO: configure CD volume for CS4248/AD1848 too */
 			temp = (ad1848->type == AD1848_TYPE_CS4231) ? 18 : 4;
 			if (ad1848->regs[temp] & 0x80)
 				ad1848->cd_vol_l = 0;
@@ -474,7 +488,7 @@ ad1848_init(ad1848_t *ad1848, uint8_t type)
     ad1848->regs[8] = 0;
     ad1848->regs[9] = 0x08;
     ad1848->regs[10] = ad1848->regs[11] = 0;
-    if ((type == AD1848_TYPE_CS4248) || (type == AD1848_TYPE_CS4231) || (type == AD1848_TYPE_CS4236))
+    if ((type == AD1848_TYPE_CS4248) || (type == AD1848_TYPE_CS4231) || (type >= AD1848_TYPE_CS4235))
 	ad1848->regs[12] = 0x8a;
     else
 	ad1848->regs[12] = 0xa;
@@ -489,7 +503,7 @@ ad1848_init(ad1848_t *ad1848, uint8_t type)
 	ad1848->regs[25] = CS4231;
 	ad1848->regs[26] = 0x80;
 	ad1848->regs[29] = 0x80;
-    } else if (type == AD1848_TYPE_CS4236) {
+    } else if (type >= AD1848_TYPE_CS4235) {
 	ad1848->regs[16] = ad1848->regs[17] = 0;
 	ad1848->regs[18] = ad1848->regs[19] = 0;
 	ad1848->regs[20] = ad1848->regs[21] = 0;

src/sound/snd_cs423x.c

@@ -12,7 +12,7 @@
  *
  * Authors:	RichardG, <richardg867@gmail.com>
  *
- *		Copyright 2021 RichardG.
+ *		Copyright 2021-2022 RichardG.
  */
 #include <stdio.h>
 #include <stdint.h>
@@ -37,7 +37,10 @@
 #include <86box/nvr.h>
 
 
+#define CRYSTAL_NOEEPROM	0x100
+
 enum {
+    CRYSTAL_CS4235  = 0xdd,
     CRYSTAL_CS4236B = 0xcb,
     CRYSTAL_CS4237B = 0xc8,
     CRYSTAL_CS4238B = 0xc9
@@ -69,7 +72,7 @@ static const uint8_t cs4236b_eeprom[] = {
     0x10, 0x03, /* DMA routing */
 
     /* PnP resources */
-    0x0e, 0x63, 0x42, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, /* CSC4236, dummy checksum (filled in by isapnp_add_card) */
+    0x0e, 0x63, 0x42, 0x35, 0x00, 0x00, 0x00, 0x00, 0x00, /* CSC4236, dummy checksum (filled in by isapnp_add_card) */
     0x0a, 0x10, 0x01, /* PnP version 1.0, vendor version 0.1 */
     0x82, 0x0e, 0x00, 'C', 'r', 'y', 's', 't', 'a', 'l', ' ', 'C', 'o', 'd', 'e' ,'c', 0x00, /* ANSI identifier */
 
@@ -312,7 +315,8 @@ cs423x_write(uint16_t addr, uint8_t val, void *priv)
 		break;
 
 	case 6: /* RAM Access End */
-		if (!val) {
+		/* TriGem Delhi-III BIOS writes undocumented value 0x40 instead of 0x00. */
+		if ((val == 0x00) || (val == 0x40)) {
 			dev->ram_dl = 0;
 
 			/* Update PnP state and resource data. */
@@ -356,6 +360,20 @@ cs423x_slam_write(uint16_t addr, uint8_t val, void *priv)
 		break;
 
 	case CRYSTAL_SLAM_INDEX:
+		/* Intercept the Activate Audio Device command. */
+		if (val == 0x79) {
+			/* Apply the last logical device's configuration. */
+			if (dev->slam_config) {
+				cs423x_pnp_config_changed(dev->slam_ld, dev->slam_config, dev);
+				free(dev->slam_config);
+				dev->slam_config = NULL;
+			}
+
+			/* Exit out of SLAM. */
+			dev->slam_state = CRYSTAL_SLAM_NONE;
+			break;
+		}
+
 		/* Write register index. */
 		dev->slam_reg = val;
 		dev->slam_state = CRYSTAL_SLAM_BYTE1;
@@ -429,18 +447,6 @@ cs423x_slam_write(uint16_t addr, uint8_t val, void *priv)
 				/* Activate or deactivate the device. */
 				dev->slam_config->activate = val & 0x01;
 				break;
-
-			case 0x79: /* activate chip */
-				/* Apply the last logical device's configuration. */
-				if (dev->slam_config) {
-					cs423x_pnp_config_changed(dev->slam_ld, dev->slam_config, dev);
-					free(dev->slam_config);
-					dev->slam_config = NULL;
-				}
-
-				/* Exit out of SLAM. */
-				dev->slam_state = CRYSTAL_SLAM_NONE;
-				break;
 		}
 
 		/* Prepare for the next register, unless a two-byte read returns above. */
@@ -541,11 +547,13 @@ cs423x_pnp_enable(cs423x_t *dev, uint8_t update_rom, uint8_t update_hwconfig)
 	if (update_rom)
 		isapnp_update_card_rom(dev->pnp_card, &dev->ram_data[dev->pnp_offset], 384);
 
-	/* Hide PnP card if the PKD bit is set, or if PnP was disabled by command 0x55. */
+	/* Disable PnP key if the PKD bit is set, or if it was disabled by command 0x55. */
+	/* But wait! The TriGem Delhi-III BIOS sends command 0x55, and its behavior doesn't
+	   line up with real hardware (still listed in the POST summary and seen by software).
+	   Disable the PnP key disabling mechanism until someone figures something out. */
+	//isapnp_enable_card(dev->pnp_card, ((dev->ram_data[0x4002] & 0x20) || !dev->pnp_enable) ? ISAPNP_CARD_NO_KEY : ISAPNP_CARD_ENABLE);
 	if ((dev->ram_data[0x4002] & 0x20) || !dev->pnp_enable)
-		isapnp_enable_card(dev->pnp_card, ISAPNP_CARD_DISABLE);
+		pclog("CS423x: Attempted to disable PnP key\n");
-	else
-		isapnp_enable_card(dev->pnp_card, ISAPNP_CARD_ENABLE);
     }
 
     /* Update some register bits based on the config data in RAM if requested. */
@@ -560,10 +568,12 @@ cs423x_pnp_enable(cs423x_t *dev, uint8_t update_rom, uint8_t update_hwconfig)
 	}
 
 	/* Update SPS. */
-	if (dev->ram_data[0x4003] & 0x04)
+	if (dev->type != CRYSTAL_CS4235) {
-		dev->indirect_regs[8] |= 0x04;
+		if (dev->ram_data[0x4003] & 0x04)
-	else
+			dev->indirect_regs[8] |= 0x04;
-		dev->indirect_regs[8] &= ~0x04;
+		else
+			dev->indirect_regs[8] &= ~0x04;
+	}
 
 	/* Update IFM. */
 	if (dev->ram_data[0x4003] & 0x80)
@@ -723,8 +733,9 @@ cs423x_init(const device_t *info)
     memset(dev, 0, sizeof(cs423x_t));
 
     /* Initialize model-specific data. */
-    dev->type = info->local;
+    dev->type = info->local & 0xff;
     switch (dev->type) {
+    	case CRYSTAL_CS4235:
 	case CRYSTAL_CS4236B:
 	case CRYSTAL_CS4237B:
 	case CRYSTAL_CS4238B:
@@ -735,36 +746,45 @@ cs423x_init(const device_t *info)
 		/* Different Chip Version and ID registers, which shouldn't be reset by ad1848_init */
 		dev->ad1848.xregs[25] = dev->type;
 
-		/* Load EEPROM contents from template. */
+		if (!(info->local & CRYSTAL_NOEEPROM)) {
-		memcpy(dev->eeprom_data, cs4236b_eeprom, sizeof(cs4236b_eeprom));
+			/* Load EEPROM contents from template. */
+			memcpy(dev->eeprom_data, cs4236b_eeprom, sizeof(cs4236b_eeprom));
 
-		/* Set content size. */
+			/* Set content size. */
-		dev->eeprom_data[2] = sizeof(cs4236b_eeprom) >> 8;
+			dev->eeprom_data[2] = sizeof(cs4236b_eeprom) >> 8;
-		dev->eeprom_data[3] = sizeof(cs4236b_eeprom) & 0xff;
+			dev->eeprom_data[3] = sizeof(cs4236b_eeprom) & 0xff;
 
-		/* Set PnP card ID and EEPROM file name. */
+			/* Set PnP card ID and EEPROM file name. */
-		switch (dev->type) {
+			switch (dev->type) {
-			case CRYSTAL_CS4236B:
+				case CRYSTAL_CS4235:
-				dev->nvr_path = "cs4236b.nvr";
+					dev->eeprom_data[8] = 0x05;
-				break;
+					dev->eeprom_data[16] = 0x08;
+					dev->eeprom_data[26] = 0x25;
+					dev->nvr_path = "cs4235.nvr";
+					break;
 
-			case CRYSTAL_CS4237B:
+				case CRYSTAL_CS4236B:
-				dev->eeprom_data[26] = 0x37;
+					dev->nvr_path = "cs4236b.nvr";
-				dev->nvr_path = "cs4237b.nvr";
+					break;
-				break;
 
-			case CRYSTAL_CS4238B:
+				case CRYSTAL_CS4237B:
-				dev->eeprom_data[26] = 0x38;
+					dev->eeprom_data[26] = 0x37;
-				dev->nvr_path = "cs4238b.nvr";
+					dev->nvr_path = "cs4237b.nvr";
-				break;
+					break;
+
+				case CRYSTAL_CS4238B:
+					dev->eeprom_data[26] = 0x38;
+					dev->nvr_path = "cs4238b.nvr";
+					break;
+			}
+
+			/* Load EEPROM contents from file if present. */
+			cs423x_nvram(dev, 0);
 		}
 
-		/* Load EEPROM contents from file if present. */
-		cs423x_nvram(dev, 0);
-
 		/* Initialize game port. The '7B and '8B game port only responds to 6 I/O ports; the remaining
 		   2 ports are reserved on those chips, and probably connected to the Digital Assist feature. */
-		dev->gameport = gameport_add((dev->type == CRYSTAL_CS4236B) ? &gameport_pnp_device : &gameport_pnp_6io_device);
+		dev->gameport = gameport_add(((dev->type == CRYSTAL_CS4235) || (dev->type == CRYSTAL_CS4236B)) ? &gameport_pnp_device : &gameport_pnp_6io_device);
 
 		break;
     }
@@ -787,6 +807,11 @@ cs423x_init(const device_t *info)
     cs423x_reset(dev);
     sound_add_handler(cs423x_get_buffer, dev);
 
+    /* Add Control/RAM backdoor handlers for CS4235. */
+    dev->ad1848.cram_priv = dev;
+    dev->ad1848.cram_read = cs423x_read;
+    dev->ad1848.cram_write = cs423x_write;
+
     return dev;
 }
 
@@ -817,6 +842,32 @@ cs423x_speed_changed(void *priv)
 }
 
 
+const device_t cs4235_device =
+{
+    "Crystal CS4235",
+    "cs4235",
+    DEVICE_ISA | DEVICE_AT,
+    CRYSTAL_CS4235,
+    cs423x_init, cs423x_close, cs423x_reset,
+    { NULL },
+    cs423x_speed_changed,
+    NULL,
+    NULL
+};
+
+const device_t cs4235_onboard_device =
+{
+    "Crystal CS4235 (On-Board)",
+    "cs4235_onboard",
+    DEVICE_ISA | DEVICE_AT,
+    CRYSTAL_CS4235 | CRYSTAL_NOEEPROM,
+    cs423x_init, cs423x_close, cs423x_reset,
+    { NULL },
+    cs423x_speed_changed,
+    NULL,
+    NULL
+};
+
 const device_t cs4236b_device =
 {
     "Crystal CS4236B",

src/sound/sound.c

@@ -106,6 +106,7 @@ static const SOUND_CARD sound_cards[] =
     { &adgold_device			},
     { &azt2316a_device			},
     { &azt1605_device			},
+    { &cs4235_device			},
     { &cs4236b_device			},
     { &sb_1_device				},
     { &sb_15_device				},

src/unix/unix.c

@@ -1272,4 +1272,4 @@ void endblit()
 void
 ui_sb_mt32lcd(char* str)
 {
-}
+}