diff --git a/chusanhook/dllmain.c b/chusanhook/dllmain.c
index 9f59301..85c6228 100644
--- a/chusanhook/dllmain.c
+++ b/chusanhook/dllmain.c
@@ -123,7 +123,7 @@ static DWORD CALLBACK chusan_pre_startup(void)
         goto fail;
     }
 
-    bool *dipsw = &chusan_hook_cfg.platform.dipsw.dipsw[0];
+    bool *dipsw = &chusan_hook_cfg.platform.system.dipsw[0];
     bool is_cvt = dipsw[2];
 
     for (int i = 0; i < 3; i++) {
diff --git a/cmhook/dllmain.c b/cmhook/dllmain.c
index b004db3..ac54a9d 100644
--- a/cmhook/dllmain.c
+++ b/cmhook/dllmain.c
@@ -58,7 +58,7 @@ static DWORD CALLBACK cm_pre_startup(void)
 
     /* Hook external DLL APIs */
 
-    printer_hook_init(&cm_hook_cfg.printer, 4, cm_hook_mod);
+    printer_hook_init(&cm_hook_cfg.printer, 0, cm_hook_mod);
 
     /* Initialize emulation hooks */
 
diff --git a/cmio/cmio.h b/cmio/cmio.h
index cb4aa9c..86d8ac9 100644
--- a/cmio/cmio.h
+++ b/cmio/cmio.h
@@ -36,9 +36,9 @@ HRESULT cm_io_init(void);
 HRESULT cm_io_poll(void);
 
 /* Get the state of the cabinet's operator buttons as of the last poll. See
-   cm_IO_OPBTN enum above: this contains bit mask definitions for button
+   CM_IO_OPBTN enum above: this contains bit mask definitions for button
    states returned in *opbtn. All buttons are active-high.
 
    Minimum API version: 0x0100 */
 
-void cm_io_get_opbtns(uint8_t *opbtn);
\ No newline at end of file
+void cm_io_get_opbtns(uint8_t *opbtn);
diff --git a/dist/chusan/segatools.ini b/dist/chusan/segatools.ini
index c0b19de..556df02 100644
--- a/dist/chusan/segatools.ini
+++ b/dist/chusan/segatools.ini
@@ -59,8 +59,8 @@ addrSuffix=11
 ; that subnet must start with 192.168.
 subnet=192.168.139.0
 
-[gpio]
-; ALLS DIP switches.
+[system]
+; Enable ALLS system settings.
 enable=1
 
 ; Enable freeplay mode. This will disable the coin slot and set the game to
diff --git a/dist/cm/segatools.ini b/dist/cm/segatools.ini
index f752b6b..2cd86b0 100644
--- a/dist/cm/segatools.ini
+++ b/dist/cm/segatools.ini
@@ -52,8 +52,8 @@ enable=1
 ; that subnet must start with 192.168.
 subnet=192.168.165.0
 
-[gpio]
-; ALLS DIP switches.
+[system]
+; Enable ALLS system settings.
 enable=1
 
 ; LAN Install: If multiple machines are present on the same LAN then set 
diff --git a/dist/fgo/segatools.ini b/dist/fgo/segatools.ini
index 0884c2d..945f9a1 100644
--- a/dist/fgo/segatools.ini
+++ b/dist/fgo/segatools.ini
@@ -72,8 +72,8 @@ addrSuffix=11
 ; that subnet must start with 192.168.
 subnet=192.168.167.0
 
-[gpio]
-; ALLS DIP switches.
+[system]
+; Enable ALLS system settings.
 enable=1
 
 ; Enable freeplay mode. This will disable the coin slot and set the game to
diff --git a/dist/idac/segatools.ini b/dist/idac/segatools.ini
index f678a77..d4c828c 100644
--- a/dist/idac/segatools.ini
+++ b/dist/idac/segatools.ini
@@ -54,8 +54,8 @@ subnet=192.168.158.0
 ; 1: JPN: Japan, 4: EXP: Export (for Asian markets)
 region=4
 
-[gpio]
-; ALLS DIP switches.
+[system]
+; Enable ALLS system settings.
 enable=1
 
 ; Enable freeplay mode. This will disable the coin slot and set the game to
diff --git a/dist/mai2/segatools.ini b/dist/mai2/segatools.ini
index 596a295..71dbf15 100644
--- a/dist/mai2/segatools.ini
+++ b/dist/mai2/segatools.ini
@@ -56,8 +56,8 @@ addrSuffix=11
 ; that subnet must start with 192.168.
 subnet=192.168.172.0
 
-[gpio]
-; ALLS DIP switches.
+[system]
+; Enable ALLS system settings.
 enable=1
 
 ; Enable freeplay mode. This will disable the coin slot and set the game to
diff --git a/dist/mercury/segatools.ini b/dist/mercury/segatools.ini
index a31abd7..891c4d8 100644
--- a/dist/mercury/segatools.ini
+++ b/dist/mercury/segatools.ini
@@ -56,8 +56,8 @@ addrSuffix=11
 ; that subnet must start with 192.168.
 subnet=192.168.174.0
 
-[gpio]
-; ALLS DIP switches.
+[system]
+; Enable ALLS system settings.
 enable=1
 
 ; Enable freeplay mode. This will disable the coin slot and set the game to
diff --git a/dist/mu3/segatools.ini b/dist/mu3/segatools.ini
index d7b8166..182e1d8 100644
--- a/dist/mu3/segatools.ini
+++ b/dist/mu3/segatools.ini
@@ -52,8 +52,8 @@ enable=1
 ; that subnet must start with 192.168.
 subnet=192.168.162.0
 
-[gpio]
-; ALLS DIP switches.
+[system]
+; Enable ALLS system settings.
 enable=1
 
 ; Enable freeplay mode. This will disable the coin slot and set the game to
diff --git a/dist/swdc/segatools.ini b/dist/swdc/segatools.ini
index 71de4e3..6fdee71 100644
--- a/dist/swdc/segatools.ini
+++ b/dist/swdc/segatools.ini
@@ -56,8 +56,8 @@ addrSuffix=11
 ; in order to find the MAIN cabinet.
 subnet=192.168.160.0
 
-[gpio]
-; ALLS DIP switches.
+[system]
+; Enable ALLS system settings.
 enable=1
 
 ; Enable freeplay mode. This will disable the coin slot and set the game to
diff --git a/fgoio/fgoio.h b/fgoio/fgoio.h
index 1adf6b7..c5b5fd8 100644
--- a/fgoio/fgoio.h
+++ b/fgoio/fgoio.h
@@ -52,16 +52,12 @@ HRESULT fgo_io_poll(void);
 void fgo_io_get_opbtns(uint8_t *opbtn);
 
 /* Get the state of the cabinet's gameplay buttons as of the last poll. See
-   FGO_IO_GAMEBTN enum above for bit mask definitions. Inputs are split into
-   a left hand side set of inputs and a right hand side set of inputs: the bit
-   mappings are the same in both cases.
-
-   All buttons are active-high, even though some buttons' electrical signals
-   on a real cabinet are active-low.
+   FGO_IO_GAMEBTN enum above: this contains bit mask definitions for button
+   states returned in *gamebtn. All buttons are active-high.
 
    Minimum API version: 0x0100 */
 
-void fgo_io_get_gamebtns(uint8_t *btn);
+void fgo_io_get_gamebtns(uint8_t *gamebtn);
 
 /* Get the position of the cabinet stick as of the last poll. The center
    position should be equal to or close to 32767.
diff --git a/platform/config.c b/platform/config.c
index fd48a3e..ad97905 100644
--- a/platform/config.c
+++ b/platform/config.c
@@ -22,7 +22,7 @@
 #include "platform/pcbid.h"
 #include "platform/platform.h"
 #include "platform/vfs.h"
-#include "platform/dipsw.h"
+#include "platform/system.h"
 
 void platform_config_load(struct platform_config *cfg, const wchar_t *filename)
 {
@@ -40,7 +40,7 @@ void platform_config_load(struct platform_config *cfg, const wchar_t *filename)
     netenv_config_load(&cfg->netenv, filename);
     nusec_config_load(&cfg->nusec, filename);
     vfs_config_load(&cfg->vfs, filename);
-    dipsw_config_load(&cfg->dipsw, filename);
+    system_config_load(&cfg->system, filename);
 }
 
 void amvideo_config_load(struct amvideo_config *cfg, const wchar_t *filename)
@@ -329,7 +329,7 @@ void vfs_config_load(struct vfs_config *cfg, const wchar_t *filename)
             filename);
 }
 
-void dipsw_config_load(struct dipsw_config *cfg, const wchar_t *filename)
+void system_config_load(struct system_config *cfg, const wchar_t *filename)
 {
     wchar_t name[7];
     size_t i;
@@ -337,14 +337,14 @@ void dipsw_config_load(struct dipsw_config *cfg, const wchar_t *filename)
     assert(cfg != NULL);
     assert(filename != NULL);
 
-    cfg->enable = GetPrivateProfileIntW(L"gpio", L"enable", 0, filename);
-    cfg->freeplay = GetPrivateProfileIntW(L"gpio", L"freeplay", 0, filename);
+    cfg->enable = GetPrivateProfileIntW(L"system", L"enable", 0, filename);
+    cfg->freeplay = GetPrivateProfileIntW(L"system", L"freeplay", 0, filename);
 
     wcscpy_s(name, _countof(name), L"dipsw0");
 
     for (i = 0 ; i < 8 ; i++) {
         name[5] = L'1' + i;
-        cfg->dipsw[i] = GetPrivateProfileIntW(L"gpio", name, 0, filename);
+        cfg->dipsw[i] = GetPrivateProfileIntW(L"system", name, 0, filename);
     }
 }
 
diff --git a/platform/config.h b/platform/config.h
index eb04b56..e945378 100644
--- a/platform/config.h
+++ b/platform/config.h
@@ -18,7 +18,7 @@
 #include "platform/pcbid.h"
 #include "platform/platform.h"
 #include "platform/vfs.h"
-#include "platform/dipsw.h"
+#include "platform/system.h"
 
 void platform_config_load(
         struct platform_config *cfg,
@@ -35,4 +35,4 @@ void netenv_config_load(struct netenv_config *cfg, const wchar_t *filename);
 void nusec_config_load(struct nusec_config *cfg, const wchar_t *filename);
 void pcbid_config_load(struct pcbid_config *cfg, const wchar_t *filename);
 void vfs_config_load(struct vfs_config *cfg, const wchar_t *filename);
-void dipsw_config_load(struct dipsw_config *cfg, const wchar_t *filename);
+void system_config_load(struct system_config *cfg, const wchar_t *filename);
diff --git a/platform/meson.build b/platform/meson.build
index 4ca2a38..aa0d362 100644
--- a/platform/meson.build
+++ b/platform/meson.build
@@ -34,7 +34,7 @@ platform_lib = static_library(
         'platform.h',
         'vfs.c',
         'vfs.h',
-        'dipsw.c',
-        'dipsw.h',
+        'system.c',
+        'system.h',
     ],
 )
diff --git a/platform/platform.c b/platform/platform.c
index 5a1b5f6..a769c97 100644
--- a/platform/platform.c
+++ b/platform/platform.c
@@ -13,7 +13,7 @@
 #include "platform/pcbid.h"
 #include "platform/platform.h"
 #include "platform/vfs.h"
-#include "platform/dipsw.h"
+#include "platform/system.h"
 
 HRESULT platform_hook_init(
         const struct platform_config *cfg,
@@ -82,7 +82,7 @@ HRESULT platform_hook_init(
         return hr;
     }
 
-    hr = dipsw_init(&cfg->dipsw, &cfg->vfs);
+    hr = system_init(&cfg->system, &cfg->vfs);
 
     if (FAILED(hr)) {
         return hr;
diff --git a/platform/platform.h b/platform/platform.h
index 8774f01..0b69f12 100644
--- a/platform/platform.h
+++ b/platform/platform.h
@@ -13,7 +13,7 @@
 #include "platform/nusec.h"
 #include "platform/pcbid.h"
 #include "platform/vfs.h"
-#include "platform/dipsw.h"
+#include "platform/system.h"
 
 struct platform_config {
     struct amvideo_config amvideo;
@@ -27,7 +27,7 @@ struct platform_config {
     struct netenv_config netenv;
     struct nusec_config nusec;
     struct vfs_config vfs;
-    struct dipsw_config dipsw;
+    struct system_config system;
 };
 
 HRESULT platform_hook_init(
diff --git a/platform/dipsw.c b/platform/system.c
similarity index 72%
rename from platform/dipsw.c
rename to platform/system.c
index 22b88ed..49f7999 100644
--- a/platform/dipsw.c
+++ b/platform/system.c
@@ -4,7 +4,7 @@
 #include <assert.h>
 #include <string.h>
 
-#include "platform/dipsw.h"
+#include "platform/system.h"
 #include "platform/vfs.h"
 
 #include "util/dprintf.h"
@@ -30,12 +30,12 @@ typedef struct
     char padding[4];
     uint8_t dip_switches;
     char data[DATA_SIZE];
-} DipSwitchBlock;
+} DipSwBlock;
 
 typedef struct
 {
     CreditBlock credit_block;
-    DipSwitchBlock dip_switch_block;
+    DipSwBlock dip_switch_block;
     char *data;
 } SystemInfo;
 
@@ -43,13 +43,13 @@ typedef struct
 
 static SystemInfo system_info;
 
-static struct dipsw_config dipsw_config;
+static struct system_config system_config;
 static struct vfs_config vfs_config;
 
-static void dipsw_read_sysfile(const wchar_t *sys_file);
-static void dipsw_save_sysfile(const wchar_t *sys_file);
+static void system_read_sysfile(const wchar_t *sys_file);
+static void system_save_sysfile(const wchar_t *sys_file);
 
-HRESULT dipsw_init(const struct dipsw_config *cfg, const struct vfs_config *vfs_cfg)
+HRESULT system_init(const struct system_config *cfg, const struct vfs_config *vfs_cfg)
 {
     HRESULT hr;
     wchar_t sys_file_path[MAX_PATH];
@@ -62,28 +62,28 @@ HRESULT dipsw_init(const struct dipsw_config *cfg, const struct vfs_config *vfs_
         return S_FALSE;
     }
 
-    memcpy(&dipsw_config, cfg, sizeof(*cfg));
+    memcpy(&system_config, cfg, sizeof(*cfg));
 
     sys_file_path[0] = L'\0';
     // concatenate vfs_config.amfs with L"sysfile.dat"
     wcsncpy(sys_file_path, vfs_cfg->amfs, MAX_PATH);
     wcsncat(sys_file_path, L"\\sysfile.dat", MAX_PATH);
 
-    dipsw_read_sysfile(sys_file_path);
+    system_read_sysfile(sys_file_path);
 
-    // now write the dipsw_config.dipsw to the dip_switch_block
-    dipsw_save_sysfile(sys_file_path);
+    // now write the system_config.system to the dip_switch_block
+    system_save_sysfile(sys_file_path);
 
     return S_OK;
 }
 
-static void dipsw_read_sysfile(const wchar_t *sys_file)
+static void system_read_sysfile(const wchar_t *sys_file)
 {
     FILE *f = _wfopen(sys_file, L"r");
 
     if (f == NULL)
     {
-        dprintf("DipSw: First run detected, DipSw settings can only be applied AFTER the first run\n");
+        dprintf("System: First run detected, system settings can only be applied AFTER the first run\n");
         return;
     }
 
@@ -93,7 +93,7 @@ static void dipsw_read_sysfile(const wchar_t *sys_file)
 
     if (file_size != 0x6000)
     {
-        dprintf("DipSw: Invalid sysfile.dat file size\n");
+        dprintf("System: Invalid sysfile.dat file size\n");
         fclose(f);
 
         return;
@@ -108,10 +108,10 @@ static void dipsw_read_sysfile(const wchar_t *sys_file)
     memcpy(&system_info.dip_switch_block, system_info.data + 0x2800, BLOCK_SIZE);
 }
 
-static void dipsw_save_sysfile(const wchar_t *sys_file)
+static void system_save_sysfile(const wchar_t *sys_file)
 {
     char block[BLOCK_SIZE];
-    uint8_t dipsw = 0;
+    uint8_t system = 0;
     uint8_t freeplay = 0;
 
     // open the sysfile.dat for writing in bytes mode
@@ -122,28 +122,28 @@ static void dipsw_save_sysfile(const wchar_t *sys_file)
         return;
     }
 
-    // write the dipsw_config.dipsw to the dip_switch_block
+    // write the system_config.system to the dip_switch_block
     for (int i = 0; i < 8; i++)
     {
-        if (dipsw_config.dipsw[i])
+        if (system_config.dipsw[i])
         {
-            // print which dipsw is enabled
-            dprintf("DipSw: DipSw%d=1 set\n", i + 1);
-            dipsw |= (1 << i);
+            // print which system is enabled
+            dprintf("System: DipSw%d=1 set\n", i + 1);
+            system |= (1 << i);
         }
     }
 
-    if (dipsw_config.freeplay)
+    if (system_config.freeplay)
     {
         // print that freeplay is enabled
-        dprintf("DipSw: Freeplay enabled\n");
+        dprintf("System: Freeplay enabled\n");
         freeplay = 1;
     }
 
     // set the new credit block
     system_info.credit_block.freeplay = freeplay;
     // set the new dip_switch_block
-    system_info.dip_switch_block.dip_switches = dipsw;
+    system_info.dip_switch_block.dip_switches = system;
 
     // calculate the new checksum, skip the old crc32 value
     // which is at the beginning of the block, thats's why the +4
@@ -167,7 +167,7 @@ static void dipsw_save_sysfile(const wchar_t *sys_file)
 
     // print the dip_switch_block in hex
     /*
-    dprintf("DipSw Block: ");
+    dprintf("System Block: ");
     for (size_t i = 0; i < BLOCK_SIZE; i++)
     {
         dprintf("%02X ", ((uint8_t *)&system_info.dip_switch_block)[i]);
diff --git a/platform/dipsw.h b/platform/system.h
similarity index 59%
rename from platform/dipsw.h
rename to platform/system.h
index 336b0d7..ba0f2a6 100644
--- a/platform/dipsw.h
+++ b/platform/system.h
@@ -7,10 +7,10 @@
 
 #include "platform/vfs.h"
 
-struct dipsw_config {
+struct system_config {
     bool enable;
     bool freeplay;
     bool dipsw[8];
 };
 
-HRESULT dipsw_init(const struct dipsw_config *cfg, const struct vfs_config *vfs_cfg);
+HRESULT system_init(const struct system_config *cfg, const struct vfs_config *vfs_cfg);