diff --git a/src/game/bg.c b/src/game/bg.c
index ac6b51c7c..71ff53d24 100644
--- a/src/game/bg.c
+++ b/src/game/bg.c
@@ -113,7 +113,7 @@ struct portalcamcacheitem *g_PortalCameraCache;
 struct bgsnake g_BgSnake;
 
 s32 g_StageIndex = 1;
-u32 var8007fc04 = 0;
+uintptr_t var8007fc04 = 0;
 u8 *var8007fc08 = NULL;
 
 #if VERSION < VERSION_NTSC_1_0
@@ -1468,7 +1468,7 @@ void bgReset(s32 stagenum)
 	u32 section2compsize;
 	u32 section2start;
 	u32 section1compsize;
-	u32 scratch;
+	uintptr_t scratch;
 
 	var8007fc0c = 8;
 
@@ -3640,7 +3640,7 @@ bool bgTestHitOnObj(struct coord *arg0, struct coord *arg1, struct coord *arg2,
 	Gfx *imggdl = NULL;
 	s32 texturenum;
 	f32 lowestsqdist = MAXFLOAT;
-	s32 offset;
+	uintptr_t offset;
 	s32 numvertices;
 	Gfx *tri4gdl;
 	s32 count;
diff --git a/src/game/bondgun.c b/src/game/bondgun.c
index f78dc6d44..54e8989cf 100644
--- a/src/game/bondgun.c
+++ b/src/game/bondgun.c
@@ -3799,16 +3799,16 @@ void bgunTickGunLoad(void)
 {
 	s32 i;
 	s32 numthistick;
-	u32 remaining;
+	u64 remaining;
 	s32 padding;
-	u32 allocsize;
-	u32 loadsize;
+	u64 allocsize;
+	u64 loadsize;
 	uintptr_t ptr;
 	struct player *player = g_Vars.currentplayer;
 	struct modeldef *modeldef;
 	struct fileinfo *fileinfo;
 	struct fileinfo *gunfileinfo;
-	s32 newvalue;
+	uintptr_t newvalue;
 	uintptr_t end;
 	u32 stack;
 #if VERSION >= VERSION_NTSC_1_0
@@ -4095,8 +4095,8 @@ void bgunTickMasterLoad(void)
 									player->gunctrl.gunloadstate = GUNLOADSTATE_MODEL;
 									player->gunctrl.loadfilenum = handfilenum;
 									player->gunctrl.loadtomodeldef = &player->gunctrl.handmodeldef;
-									player->gunctrl.loadmemptr = (u32 *) &player->gunctrl.handmemloadptr;
-									player->gunctrl.loadmemremaining = (u32 *) &player->gunctrl.handmemloadremaining;
+									player->gunctrl.loadmemptr = (uintptr_t *) &player->gunctrl.handmemloadptr;
+									player->gunctrl.loadmemremaining = (uintptr_t*) &player->gunctrl.handmemloadremaining;
 								}
 
 								bgunTickGunLoad();
@@ -4123,8 +4123,8 @@ void bgunTickMasterLoad(void)
 							player->gunctrl.gunloadstate = GUNLOADSTATE_MODEL;
 							player->gunctrl.loadfilenum = filenum;
 							player->gunctrl.loadtomodeldef = &player->gunctrl.gunmodeldef;
-							player->gunctrl.loadmemptr = (u32 *) &player->gunctrl.memloadptr;
-							player->gunctrl.loadmemremaining = (u32 *) &player->gunctrl.memloadremaining;
+							player->gunctrl.loadmemptr = (uintptr_t*) &player->gunctrl.memloadptr;
+							player->gunctrl.loadmemremaining = (uintptr_t*) &player->gunctrl.memloadremaining;
 						}
 
 						bgunTickGunLoad();
@@ -4165,8 +4165,8 @@ void bgunTickMasterLoad(void)
 											player->gunctrl.loadfilenum = filenum;
 											player->gunctrl.gunloadstate = GUNLOADSTATE_MODEL;
 											player->gunctrl.loadtomodeldef = &player->gunctrl.cartmodeldef;
-											player->gunctrl.loadmemptr = (u32 *) &player->gunctrl.memloadptr;
-											player->gunctrl.loadmemremaining = (u32 *) &player->gunctrl.memloadremaining;
+											player->gunctrl.loadmemptr = (uintptr_t *) &player->gunctrl.memloadptr;
+											player->gunctrl.loadmemremaining = (uintptr_t*) &player->gunctrl.memloadremaining;
 											break;
 										}
 
@@ -4194,16 +4194,16 @@ void bgunTickMasterLoad(void)
 
 							hand->unk0dcc = (s32 *) player->gunctrl.memloadptr;
 
-							value = bgunCreateModelCmdList(&hand->gunmodel, player->gunctrl.gunmodeldef->rootnode, (s32 *) player->gunctrl.memloadptr);
+							value = bgunCreateModelCmdList(&hand->gunmodel, player->gunctrl.gunmodeldef->rootnode, (uintptr_t *) player->gunctrl.memloadptr);
 
 							sum += value;
 							player->gunctrl.memloadptr += value;
 							player->gunctrl.memloadremaining -= value;
 
 							if (player->gunctrl.handmodeldef != 0) {
-								hand->unk0dd0 = (s32 *) player->gunctrl.memloadptr;
+								hand->unk0dd0 = (uintptr_t*) player->gunctrl.memloadptr;
 
-								value = bgunCreateModelCmdList(&hand->handmodel, player->gunctrl.handmodeldef->rootnode, (s32 *) player->gunctrl.memloadptr);
+								value = bgunCreateModelCmdList(&hand->handmodel, player->gunctrl.handmodeldef->rootnode, (uintptr_t*) player->gunctrl.memloadptr);
 
 								sum += value;
 								player->gunctrl.memloadptr += value;
@@ -6423,7 +6423,7 @@ void bgunDisarm(struct prop *attackerprop)
  *
  * With this function stubbed, part of the CMP150 model does not render.
  */
-void bgunExecuteModelCmdList(s32 *ptr)
+void bgunExecuteModelCmdList(uintptr_t *ptr)
 {
 	union modelrwdata *rwdata;
 	struct modelnode *node;
@@ -6480,7 +6480,7 @@ void bgunExecuteModelCmdList(s32 *ptr)
  * iterate the command list to update part visibility rather than iterate the
  * full model tree.
  */
-s32 bgunCreateModelCmdList(struct model *model, struct modelnode *nodearg, s32 *ptr)
+s32 bgunCreateModelCmdList(struct model *model, struct modelnode *nodearg, uintptr_t *ptr)
 {
 	s32 len = 0;
 	struct modelnode *node = nodearg;
@@ -6501,7 +6501,7 @@ s32 bgunCreateModelCmdList(struct model *model, struct modelnode *nodearg, s32 *
 			ptr[2] = (uintptr_t)node;
 			ptr[3] = (uintptr_t)rodata->distance.target;
 			ptr += 4;
-			len += 16;
+			len += 4 * sizeof(uintptr_t);
 			break;
 		case MODELNODETYPE_TOGGLE:
 			rodata = node->rodata;
@@ -6513,7 +6513,7 @@ s32 bgunCreateModelCmdList(struct model *model, struct modelnode *nodearg, s32 *
 			ptr[2] = (uintptr_t)node;
 			ptr[3] = (uintptr_t)rodata->toggle.target;
 			ptr += 4;
-			len += 16;
+			len += 4 * sizeof(uintptr_t);
 			break;
 		case MODELNODETYPE_HEADSPOT:
 			rwdata = modelGetNodeRwData(model, node);
@@ -6522,7 +6522,7 @@ s32 bgunCreateModelCmdList(struct model *model, struct modelnode *nodearg, s32 *
 			ptr[0] = 2;
 			ptr[1] = (uintptr_t)rwdata;
 			ptr += 2;
-			len += 8;
+			len += 2 * sizeof(uintptr_t);
 			break;
 		case MODELNODETYPE_0B:
 			rwdata = modelGetNodeRwData(model, node);
@@ -6530,7 +6530,7 @@ s32 bgunCreateModelCmdList(struct model *model, struct modelnode *nodearg, s32 *
 			ptr[0] = 3;
 			ptr[1] = (uintptr_t)rwdata;
 			ptr += 2;
-			len += 8;
+			len += 2 * sizeof(uintptr_t);
 			break;
 		case MODELNODETYPE_CHRGUNFIRE:
 			rwdata = modelGetNodeRwData(model, node);
@@ -6538,7 +6538,7 @@ s32 bgunCreateModelCmdList(struct model *model, struct modelnode *nodearg, s32 *
 			ptr[0] = 4;
 			ptr[1] = (uintptr_t)rwdata;
 			ptr += 2;
-			len += 8;
+			len += 2 * sizeof(uintptr_t);
 			break;
 		case MODELNODETYPE_DL:
 			rodata = node->rodata;
@@ -6552,7 +6552,7 @@ s32 bgunCreateModelCmdList(struct model *model, struct modelnode *nodearg, s32 *
 			ptr[3] = (uintptr_t)rwdata->dl.gdl;
 			ptr[4] = (uintptr_t)rwdata->dl.colours;
 			ptr += 5;
-			len += 20;
+			len += 5 * sizeof(uintptr_t);
 			break;
 		}
 
@@ -6576,7 +6576,7 @@ s32 bgunCreateModelCmdList(struct model *model, struct modelnode *nodearg, s32 *
 	}
 
 	*ptr = 6;
-	len += 4;
+	len += sizeof(uintptr_t);
 
 	return len;
 }
diff --git a/src/game/file.c b/src/game/file.c
index 6bad0b536..815e7612e 100644
--- a/src/game/file.c
+++ b/src/game/file.c
@@ -4114,7 +4114,7 @@ u32 g_FileTable[] = {
 	(uintptr_t) &_filenamesSegmentRomStart,
 };
 #else // PLATFORM_N64
-u32 g_FileTable[NUM_FILES + 1]; // TODO: this is only used to get the filenum, remove this
+uintptr_t g_FileTable[NUM_FILES + 1]; // TODO: this is only used to get the filenum, remove this
 #endif // PLATFORM_N64
 
 romptr_t fileGetRomAddress(s32 filenum)
@@ -4126,7 +4126,7 @@ romptr_t fileGetRomAddress(s32 filenum)
 #endif
 }
 
-u32 fileGetRomSizeByTableAddress(u32 *filetableaddr)
+u32 fileGetRomSizeByTableAddress(uintptr_t *filetableaddr)
 {
 #ifdef PLATFORM_N64
 	u32 size;
@@ -4146,10 +4146,10 @@ u32 fileGetRomSizeByTableAddress(u32 *filetableaddr)
 
 s32 fileGetRomSize(s32 filenum)
 {
-	return fileGetRomSizeByTableAddress((u32 *)&g_FileTable[filenum]);
+	return fileGetRomSizeByTableAddress((uintptr_t*)&g_FileTable[filenum]);
 }
 
-u32 file0f166ea8(u32 *filetableaddr)
+u32 file0f166ea8(uintptr_t *filetableaddr)
 {
 	return 0;
 }
@@ -4158,7 +4158,7 @@ void fileLoad(u8 *dst, u32 allocationlen, romptr_t *romaddrptr, struct fileinfo
 {
 #ifndef PLATFORM_N64
 	// load the file first
-	const s32 filenum = (u32 *)romaddrptr - g_FileTable;
+	const s32 filenum = (uintptr_t *)romaddrptr - g_FileTable;
 	u32 romsize = 0;
 	u8 *filedata = romdataFileLoad(filenum, &romsize);
 	if (!filedata) {
@@ -4176,7 +4176,7 @@ void fileLoad(u8 *dst, u32 allocationlen, romptr_t *romaddrptr, struct fileinfo
 		dmaExec(dst, *romaddrptr, romsize);
 	} else {
 		// DMA the compressed data to scratch space then inflate
-		u8 *scratch = (dst + allocationlen) - ((romsize + 7) & 0xfffffff8);
+		u8 *scratch = (dst + allocationlen) - ((romsize + 7) & 0xfffffffffffffff8);
 
 		if ((uintptr_t)scratch - (uintptr_t)dst < 8) {
 			info->loadedsize = 0;
@@ -4241,7 +4241,7 @@ void fileLoadPartToAddr(u16 filenum, void *memaddr, s32 offset, u32 len)
 {
 	u32 stack[2];
 
-	if (fileGetRomSizeByTableAddress((u32 *)&g_FileTable[filenum])) {
+	if (fileGetRomSizeByTableAddress((uintptr_t*)&g_FileTable[filenum])) {
 #ifdef PLATFORM_N64
 		dmaExec(memaddr, (romptr_t) g_FileTable[filenum] + offset, len);
 #else
@@ -4317,7 +4317,7 @@ void *fileLoadToNew(s32 filenum, u32 method)
 
 		ptr = mempAlloc(info->loadedsize, MEMPOOL_STAGE);
 		info->allocsize = info->loadedsize;
-		fileLoad(ptr, info->loadedsize, (u32 *)&g_FileTable[filenum], info);
+		fileLoad(ptr, info->loadedsize, (uintptr_t*)&g_FileTable[filenum], info);
 
 		if (method != FILELOADMETHOD_EXTRAMEM) {
 			mempRealloc(ptr, info->loadedsize, MEMPOOL_STAGE);
@@ -4343,7 +4343,7 @@ void *fileLoadToAddr(s32 filenum, s32 method, u8 *ptr, u32 size)
 
 	if (method == FILELOADMETHOD_EXTRAMEM || method == FILELOADMETHOD_DEFAULT) {
 		info->allocsize = size;
-		fileLoad(ptr, size, (u32 *)&g_FileTable[filenum], info);
+		fileLoad(ptr, size, (uintptr_t*)&g_FileTable[filenum], info);
 	} else {
 		while (1);
 	}
diff --git a/src/game/filemgr.c b/src/game/filemgr.c
index 544c3b82d..ab0e15ef9 100644
--- a/src/game/filemgr.c
+++ b/src/game/filemgr.c
@@ -411,7 +411,7 @@ struct menudialogdef g_FilemgrErrorMenuDialog = {
  * For a file listing, iterate the devices until the one at optionindex is found.
  * Depending on operation, return the device name or index of the first file.
  */
-s32 filemgrGetDeviceNameOrStartIndex(s32 listnum, s32 operation, s32 optionindex)
+uintptr_t filemgrGetDeviceNameOrStartIndex(s32 listnum, s32 operation, s32 optionindex)
 {
 	u16 names[] = {
 		L_OPTIONS_111, // "Game Pak"
diff --git a/src/game/modeldef.c b/src/game/modeldef.c
index 42f5d97a4..ccd473c69 100644
--- a/src/game/modeldef.c
+++ b/src/game/modeldef.c
@@ -137,7 +137,7 @@ void modeldef0f1a7560(struct modeldef *modeldef, u16 filenum, u32 arg2, struct m
 		texCopyGdls((Gfx *)((uintptr_t)modeldef + (UNSEGADDR(gdl) & 0xffffff)),
 				(Gfx *)(v1 + (uintptr_t)modeldef),
 				loadedsize - (uintptr_t)(((uintptr_t)modeldef + (UNSEGADDR(gdl) & 0xffffff)) - (uintptr_t)modeldef));
-		texLoadFromConfigs(modeldef->texconfigs, modeldef->numtexconfigs, texpool, (uintptr_t)modeldef2 - arg2);
+		texLoadFromConfigs(modeldef->texconfigs, modeldef->numtexconfigs, texpool, (uintptr_t)modeldef2 - (uintptr_t)arg2);
 
 		while (node) {
 			prevnode = node;
@@ -190,7 +190,7 @@ struct modeldef *modeldefLoad(u16 fileid, u8 *dst, s32 size, struct texpool *arg
 	if (dst) {
 		modeldef = fileLoadToAddr(fileid, FILELOADMETHOD_EXTRAMEM, dst, size);
 	} else {
-		modeldef = fileLoadToNew(fileid, FILELOADMETHOD_EXTRAMEM);
+		modeldef = fileLoadToNew(fileid, FILELOADMETHOD_EXTRAMEM, FT_LANG);
 	}
 
 	modelPromoteTypeToPointer(modeldef);
diff --git a/src/game/setup.c b/src/game/setup.c
index ec9337667..627bf1420 100644
--- a/src/game/setup.c
+++ b/src/game/setup.c
@@ -1237,7 +1237,7 @@ void setupLoadBriefing(s32 stagenum, u8 *buffer, s32 bufferlen, struct briefing
 
 		langLoadToAddr(briefing->langbank, langbuffer, langbufferlen);
 
-		start = (struct defaultobj *)((uintptr_t)setup + (u32)setup->props);
+		start = (struct defaultobj *)((uintptr_t)setup + (uintptr_t)setup->props);
 
 		if (start != NULL) {
 			struct defaultobj *obj;
@@ -1323,10 +1323,10 @@ void setupLoadFiles(s32 stagenum)
 		setup = (struct stagesetup *)g_GeCreditsData;
 		langLoad(langGetLangBankIndexFromStagenum(stagenum));
 
-		g_StageSetup.intro = (s32 *)((uintptr_t)setup + (u32)setup->intro);
-		g_StageSetup.props = (u32 *)((uintptr_t)setup + (u32)setup->props);
-		g_StageSetup.paths = (struct path *)((uintptr_t)setup + (u32)setup->paths);
-		g_StageSetup.ailists = (struct ailist *)((uintptr_t)setup + (u32)setup->ailists);
+		g_StageSetup.intro = (s32 *)((uintptr_t)setup + (uintptr_t)setup->intro);
+		g_StageSetup.props = (u32 *)((uintptr_t)setup + (uintptr_t)setup->props);
+		g_StageSetup.paths = (struct path *)((uintptr_t)setup + (uintptr_t)setup->paths);
+		g_StageSetup.ailists = (struct ailist *)((uintptr_t)setup + (uintptr_t)setup->ailists);
 
 		g_LoadType = LOADTYPE_PADS;
 
@@ -1339,7 +1339,7 @@ void setupLoadFiles(s32 stagenum)
 		// Convert ailist pointers from file-local to proper pointers
 		if (g_StageSetup.ailists) {
 			for (i = 0; g_StageSetup.ailists[i].list != NULL; i++) {
-				g_StageSetup.ailists[i].list = (u8 *)((uintptr_t)setup + (u32)g_StageSetup.ailists[i].list);
+				g_StageSetup.ailists[i].list = (u8 *)((uintptr_t)setup + (uintptr_t)g_StageSetup.ailists[i].list);
 			}
 		}
 
@@ -1383,7 +1383,7 @@ void setupLoadFiles(s32 stagenum)
 		// and calculate the path lengths
 		if (g_StageSetup.paths) {
 			for (i = 0; g_StageSetup.paths[i].pads != NULL; i++) {
-				g_StageSetup.paths[i].pads = (s32 *)((uintptr_t)g_StageSetup.paths[i].pads + (u32)setup);
+				g_StageSetup.paths[i].pads = (s32 *)((uintptr_t)g_StageSetup.paths[i].pads + (uintptr_t)setup);
 
 				for (j = 0; g_StageSetup.paths[i].pads[j] >= 0; j++);
 
diff --git a/src/game/texdecompress.c b/src/game/texdecompress.c
index 494bda391..1e39dc2f6 100644
--- a/src/game/texdecompress.c
+++ b/src/game/texdecompress.c
@@ -2381,12 +2381,12 @@ void texLoad(texnum_t *updateword, struct texpool *pool, bool unusedarg)
 	}
 }
 
-void texLoadFromConfigs(struct textureconfig *configs, s32 numconfigs, struct texpool *pool, s32 arg3)
+void texLoadFromConfigs(struct textureconfig *configs, s32 numconfigs, struct texpool *pool, uintptr_t arg3)
 {
 	s32 i;
 
 	for (i = 0; i < numconfigs; i++) {
-		if ((s32)configs[i].texturenum < NUM_TEXTURES) {
+		if ((uintptr_t)configs[i].texturenum < NUM_TEXTURES) {
 			texLoad(&configs[i].texturenum, pool, true);
 			configs[i].unk0b = 1;
 		} else {
diff --git a/src/include/constants.h b/src/include/constants.h
index 09152e169..9a7c25e5f 100644
--- a/src/include/constants.h
+++ b/src/include/constants.h
@@ -51,7 +51,7 @@
 #define ALIGN2(val)         (((val) | 1) ^ 0x1)
 #define ALIGN8(val)         ((((val) + 0x7) | 0x7) ^ 0x7)
 #define ALIGN16(val)        ((((val) + 0xf) | 0xf) ^ 0xf)
-#define ALIGN64(val)        (((((u32)(val)) + 0x3f) | 0x3f) ^ 0x3f)
+#define ALIGN64(val)        (((((uintptr_t)(val)) + 0x3f) | 0x3f) ^ 0x3f)
 #define ARRAYCOUNT(a)       (s32)(sizeof(a) / sizeof(a[0]))
 #define CHRNAVSEED(chr)     ((g_Vars.lvframe60 >> 9) * 128 + chr->chrnum * 8)
 #define CHRRACE(chr)        (chr ? chr->race : RACE_HUMAN)
diff --git a/src/include/game/bondgun.h b/src/include/game/bondgun.h
index 5bc113d38..5a9887b41 100644
--- a/src/include/game/bondgun.h
+++ b/src/include/game/bondgun.h
@@ -118,8 +118,8 @@ bool bgun0f0a27c8(void);
 void bgunHandlePlayerDead(void);
 bool bgunIsMissionCritical(s32 weaponnum);
 void bgunDisarm(struct prop *attacker);
-void bgunExecuteModelCmdList(s32 *arg0);
-s32 bgunCreateModelCmdList(struct model *model, struct modelnode *node, s32 *ptr);
+void bgunExecuteModelCmdList(uintptr_t *arg0);
+s32 bgunCreateModelCmdList(struct model *model, struct modelnode *node, uintptr_t *ptr);
 void bgunStartDetonateAnimation(s32 playernum);
 void bgunUpdateGangsta(struct hand *hand, s32 handnum, struct coord *arg2, struct weaponfunc *funcdef, Mtxf *arg4, Mtxf *arg5);
 void bgunUpdateSmoke(struct hand *hand, s32 handnum, s32 weaponnum, struct weaponfunc *funcdef);
diff --git a/src/include/game/filemgr.h b/src/include/game/filemgr.h
index c0f63bad8..80695df9d 100644
--- a/src/include/game/filemgr.h
+++ b/src/include/game/filemgr.h
@@ -16,7 +16,7 @@ void filemgrSetFileToDelete(struct filelistfile *file, s32 filetype);
 char *filemgrMenuTextFailReason(struct menuitem *item);
 char *filemgrMenuTextDeviceNameForError(struct menuitem *item);
 void filemgrPushErrorDialog(u16 errnum);
-s32 filemgrGetDeviceNameOrStartIndex(s32 listnum, s32 operation, s32 optionindex);
+uintptr_t filemgrGetDeviceNameOrStartIndex(s32 listnum, s32 operation, s32 optionindex);
 char *filemgrMenuTextErrorTitle(struct menuitem *item);
 char *filemgrMenuTextFileType(struct menuitem *item);
 void func0f10898c(void);
diff --git a/src/include/game/texdecompress.h b/src/include/game/texdecompress.h
index a6d92d548..4fc372967 100644
--- a/src/include/game/texdecompress.h
+++ b/src/include/game/texdecompress.h
@@ -33,7 +33,7 @@ s32 texGetPoolFreeBytes(struct texpool *pool);
 u8 *texGetPoolLeftPos(struct texpool *pool);
 void texLoadFromDisplayList(Gfx *gdl, struct texpool *pool, s32 arg2);
 void texLoad(texnum_t *updateword, struct texpool *pool, bool unusedarg);
-void texLoadFromConfigs(struct textureconfig *configs, s32 numconfigs, struct texpool *pool, s32 arg3);
+void texLoadFromConfigs(struct textureconfig *configs, s32 numconfigs, struct texpool *pool, uintptr_t arg3);
 void texLoadFromTextureNum(u32 arg0, struct texpool *pool);
 #ifndef PLATFORM_N64
 void texSwizzleInternal(u8 *dst, s32 width, s32 height, s32 format, u32 dstlen);
diff --git a/src/include/lib/mema.h b/src/include/lib/mema.h
index c83878ef6..29f4b754b 100644
--- a/src/include/lib/mema.h
+++ b/src/include/lib/mema.h
@@ -6,13 +6,13 @@
 
 void memaDefrag(void);
 void memaInit(void);
-void memaReset(void *ptr, u32 size);
+void memaReset(void *ptr, u64 size);
 void memaPrint(void);
-void *memaAlloc(u32 size);
-s32 memaGrow(s32 addr, u32 amount);
-void _memaFree(s32 addr, s32 size);
-void memaFree(void *addr, s32 size);
-s32 memaGetLongestFree(void);
-bool memaRealloc(s32 addr, u32 oldsize, u32 newsize);
+void *memaAlloc(u64 size);
+uintptr_t memaGrow(uintptr_t addr, u64 amount);
+void _memaFree(uintptr_t addr, u64 size);
+void memaFree(void *addr, u64 size);
+u64 memaGetLongestFree(void);
+bool memaRealloc(uintptr_t addr, u64 oldsize, u64 newsize);
 
 #endif
diff --git a/src/include/lib/mp3.h b/src/include/lib/mp3.h
index 6369dd7e8..92b720046 100644
--- a/src/include/lib/mp3.h
+++ b/src/include/lib/mp3.h
@@ -5,7 +5,7 @@
 #include "types.h"
 
 void mp3Init(ALHeap *heap);
-void mp3PlayFile(s32 romaddr, s32 filesize);
+void mp3PlayFile(uintptr_t romaddr, s32 filesize);
 void func00037e1c(void);
 void func00037e38(void);
 void func00037e68(void);
diff --git a/src/include/lib/snd.h b/src/include/lib/snd.h
index 0b96846c3..0f1056039 100644
--- a/src/include/lib/snd.h
+++ b/src/include/lib/snd.h
@@ -12,11 +12,11 @@ void snd0000ea80(u16 volume);
 void sndResetCurMp3(void);
 void sndLoadSfxCtl(void);
 void sndIncrementAges(void);
-ALEnvelope *sndLoadEnvelope(u32 offset, u16 index);
-ALKeyMap *sndLoadKeymap(u32 offset, u16 index);
-ALADPCMBook *sndLoadAdpcmBook(u32 offset, u16 index);
-ALADPCMloop *sndLoadAdpcmLoop(u32 offset, u16 index);
-ALWaveTable *sndLoadWavetable(u32 offset, u16 index);
+ALEnvelope *sndLoadEnvelope(uintptr_t offset, u16 index);
+ALKeyMap *sndLoadKeymap(uintptr_t offset, u16 index);
+ALADPCMBook* sndLoadAdpcmBook(uintptr_t offset, u16 index);
+ALADPCMloop* sndLoadAdpcmLoop(uintptr_t offset, u16 index);
+ALWaveTable* sndLoadWavetable(uintptr_t offset, u16 index);
 void sndSetSoundMode(s32 mode);
 ALSound *sndLoadSound(s16 soundnum);
 void seqInit(struct seqinstance *seq);
diff --git a/src/include/types.h b/src/include/types.h
index 3a5059392..a2e66417f 100644
--- a/src/include/types.h
+++ b/src/include/types.h
@@ -2307,7 +2307,7 @@ struct hand {
 	/*0x0dc0*/ u32 fspare8;
 	/*0x0dc4*/ struct abmag abmag;
 	/*0x0dcc*/ s32 *unk0dcc;
-	/*0x0dd0*/ s32 *unk0dd0;
+	/*0x0dd0*/ uintptr_t *unk0dd0;
 	/*0x0dd4*/ s32 unk0dd4;
 	/*0x0dd8*/ Mtxf *unk0dd8;
 };
@@ -2354,8 +2354,8 @@ struct gunctrl {
 	/*0x15b1*/ u8 gunloadstate;
 	/*0x15b2*/ u16 loadfilenum;
 	/*0x15b4*/ struct modeldef **loadtomodeldef;
-	/*0x15b8*/ u32 *loadmemptr;
-	/*0x15bc*/ u32 *loadmemremaining;
+	/*0x15b8*/ uintptr_t *loadmemptr;
+	/*0x15bc*/ uintptr_t*loadmemremaining;
 	/*0x15c0*/ struct texpool texpool;
 	/*0x15d0*/ u32 nexttexturetoload;
 	/*0x15d4*/ struct fileinfo fileinfo;
@@ -3363,8 +3363,8 @@ struct handlerdata_label {
 
 struct handlerdata_list {
 	union {
-		u32 value;
-		s32 values32;
+		uintptr_t value;
+		intptr_t values32;
 	};
 	union {
 		s32 unk04;
diff --git a/src/lib/mema.c b/src/lib/mema.c
index e0dccdf14..d0676ccff 100644
--- a/src/lib/mema.c
+++ b/src/lib/mema.c
@@ -38,8 +38,8 @@
 #define MAX_SPACES 124
 
 struct memaspace {
-	s32 addr;
-	u32 size;
+	uintptr_t addr;
+	u64 size;
 };
 
 /**
@@ -55,8 +55,8 @@ struct memaheap {
 	struct memaspace end2;
 };
 
-s32 g_MemaHeapStart;
-s32 g_MemaHeapSize;
+uintptr_t g_MemaHeapStart;
+u64 g_MemaHeapSize;
 struct memaheap g_MemaHeap;
 
 #if VERSION == VERSION_PAL_BETA
@@ -65,8 +65,8 @@ u32 g_MemaLeastEverFree = 1000000;
 
 void memaSwap(struct memaspace *a, struct memaspace *b)
 {
-	u32 tempaddr = a->addr;
-	u32 tempsize = a->size;
+	uintptr_t tempaddr = a->addr;
+	u64 tempsize = a->size;
 	a->addr = b->addr;
 	a->size = b->size;
 	b->addr = tempaddr;
@@ -86,7 +86,7 @@ bool memaDefragPass(struct memaheap *heap)
 	struct memaspace *prev = &heap->start;
 	struct memaspace *curr = &heap->spaces[0];
 	struct memaspace *last = &heap->spaces[MAX_SPACES - 1];
-	u32 addr = 0;
+	uintptr_t addr = 0;
 
 	while (curr <= last) {
 		if (curr->size != 0) {
@@ -177,7 +177,7 @@ struct memaspace *memaMakeSlot(struct memaheap *heap)
 	return best;
 }
 
-void _memaFree(s32 addr, s32 size)
+void _memaFree(uintptr_t addr, u64 size)
 {
 	// Choose an index in the spaces array which we'll mark a space as free,
 	// based on how far into the heap the allocation is. This is a rough
@@ -215,7 +215,7 @@ void memaInit(void)
 	// empty
 }
 
-void memaReset(void *heapaddr, u32 heapsize)
+void memaReset(void *heapaddr, u64 heapsize)
 {
 	struct memaspace *space;
 
@@ -398,14 +398,14 @@ void memaPrint(void)
 #endif
 }
 
-void *memaAlloc(u32 size)
+void *memaAlloc(u64 size)
 {
 	uintptr_t addr;
-	u32 diff;
+	uintptr_t diff;
 	s32 i;
 
 	struct memaspace *curr;
-	u32 bestdiff;
+	uintptr_t bestdiff;
 	struct memaspace *best;
 
 	if (1);
@@ -487,7 +487,7 @@ void *memaAlloc(u32 size)
 /**
  * Grow the allocation which currently *ends at* the given address.
  */
-s32 memaGrow(s32 addr, u32 amount)
+uintptr_t memaGrow(uintptr_t addr, u64 amount)
 {
 	struct memaspace *curr = &g_MemaHeap.spaces[0];
 
@@ -512,7 +512,7 @@ found:
 	return addr;
 }
 
-void memaFree(void *addr, s32 size)
+void memaFree(void *addr, u64 size)
 {
 	_memaFree((uintptr_t) addr, size);
 }
@@ -526,7 +526,7 @@ void mema00012cd4(void)
  * Find and return the largest amount of contiguous free space in the pool.
  * ie. the biggest allocation that mema can currently make.
  */
-s32 memaGetLongestFree(void)
+u64 memaGetLongestFree(void)
 {
 	struct memaspace *curr;
 	s32 biggest = 0;
@@ -550,7 +550,7 @@ s32 memaGetLongestFree(void)
 	return 0;
 }
 
-bool memaRealloc(s32 addr, u32 oldsize, u32 newsize)
+bool memaRealloc(uintptr_t addr, u64 oldsize, u64 newsize)
 {
 	if (newsize > oldsize) {
 		if (!memaGrow(addr + oldsize, newsize - oldsize)) {
diff --git a/src/lib/mp3.c b/src/lib/mp3.c
index 270340c1d..9f69e9ac5 100644
--- a/src/lib/mp3.c
+++ b/src/lib/mp3.c
@@ -88,7 +88,7 @@ void mp3Init(ALHeap *heap)
 	func00038b90(func00038ba8);
 }
 
-void mp3PlayFile(s32 romaddr, s32 filesize)
+void mp3PlayFile(uintptr_t romaddr, s32 filesize)
 {
 	if (g_Mp3Vars.var8009c3dc == NULL) {
 		return;
@@ -389,7 +389,7 @@ void func00038b90(void *fn)
 
 s32 func00038ba8(s32 arg0, u8 *arg1, s32 arg2, s32 arg3)
 {
-	u32 sp1c;
+	uintptr_t sp1c;
 	ALDMAproc proc;
 
 	if (arg3 != -1) {
diff --git a/src/lib/naudio/n_load.c b/src/lib/naudio/n_load.c
index 365774c4d..aa8070356 100644
--- a/src/lib/naudio/n_load.c
+++ b/src/lib/naudio/n_load.c
@@ -258,7 +258,7 @@ s32 n_alLoadParam(N_PVoice *filter, s32 paramID, void *param)
 
 Acmd *_decodeChunk(Acmd *ptr, N_PVoice *f, s32 tsam, s32 nbytes, s16 outp, s16 inp, u32 flags)
 {
-	s32 dramAlign, dramLoc;
+	intptr_t dramAlign, dramLoc;
 
 	if (nbytes > 0) {
 		dramLoc = (f->dc_dma)(f->dc_memin, nbytes, f->dc_dmaState);
diff --git a/src/lib/snd.c b/src/lib/snd.c
index 0abedf5a8..e130cdb0f 100644
--- a/src/lib/snd.c
+++ b/src/lib/snd.c
@@ -952,7 +952,7 @@ void sndLoadSfxCtl(void)
 	u8 *buffer;
 	ALBankFile *file;
 	ALBank *bank;
-	u32 romaddr;
+	romptr_t romaddr;
 	u32 size;
 
 	g_ALSoundRomOffsets = NULL;
@@ -966,14 +966,14 @@ void sndLoadSfxCtl(void)
 	// then load the first 256 bytes of the bank.
 	file = (ALBankFile *) buffer;
 	romaddr = (romptr_t) REF_SEG _sfxctlSegmentRomStart;
-	romaddr += (u32)file->bankArray[0];
+	romaddr += (uintptr_t)file->bankArray[0];
 	dmaExec(buffer, romaddr, size);
 
 	// Get the ROM address of the first (and only) instrument,
 	// then load the first 256 bytes of the instrument.
 	bank = (ALBank *) buffer;
 	romaddr = (romptr_t) REF_SEG _sfxctlSegmentRomStart;
-	romaddr += (u32)bank->instArray[0];
+	romaddr += (uintptr_t)bank->instArray[0];
 	dmaExec(buffer, romaddr, size);
 
 	// Get the soundCount (spoiler: there's 1545+1).
@@ -1027,7 +1027,7 @@ void sndIncrementAges(void)
 }
 #endif
 
-ALEnvelope *sndLoadEnvelope(u32 offset, u16 cacheindex)
+ALEnvelope *sndLoadEnvelope(uintptr_t offset, u16 cacheindex)
 {
 #if VERSION >= VERSION_NTSC_1_0
 	u8 spaf[0x90];
@@ -1074,7 +1074,7 @@ ALEnvelope *sndLoadEnvelope(u32 offset, u16 cacheindex)
 	return s1;
 }
 
-ALKeyMap *sndLoadKeymap(u32 offset, u16 cacheindex)
+ALKeyMap *sndLoadKeymap(uintptr_t offset, u16 cacheindex)
 {
 #if VERSION >= VERSION_NTSC_1_0
 	u8 spaf[0x90];
@@ -1121,7 +1121,7 @@ ALKeyMap *sndLoadKeymap(u32 offset, u16 cacheindex)
 	return s1;
 }
 
-ALADPCMBook *sndLoadAdpcmBook(u32 offset, u16 cacheindex)
+ALADPCMBook *sndLoadAdpcmBook(uintptr_t offset, u16 cacheindex)
 {
 #if VERSION >= VERSION_NTSC_1_0
 	u8 spaf[0x150];
@@ -1168,7 +1168,7 @@ ALADPCMBook *sndLoadAdpcmBook(u32 offset, u16 cacheindex)
 	return s1;
 }
 
-ALADPCMloop *sndLoadAdpcmLoop(u32 offset, u16 cacheindex)
+ALADPCMloop *sndLoadAdpcmLoop(uintptr_t offset, u16 cacheindex)
 {
 #if VERSION >= VERSION_NTSC_1_0
 	u8 spaf[0x90];
@@ -1223,7 +1223,7 @@ ALADPCMloop *sndLoadAdpcmLoop(u32 offset, u16 cacheindex)
 	return s1;
 }
 
-ALWaveTable *sndLoadWavetable(u32 offset, u16 cacheindex)
+ALWaveTable *sndLoadWavetable(uintptr_t offset, u16 cacheindex)
 {
 #if VERSION >= VERSION_NTSC_1_0
 	u8 spaf[0x90];
diff --git a/src/lib/ultra/audio/bnkf.c b/src/lib/ultra/audio/bnkf.c
index 3715d4280..0a8b41009 100644
--- a/src/lib/ultra/audio/bnkf.c
+++ b/src/lib/ultra/audio/bnkf.c
@@ -3,14 +3,14 @@
 #include <ultraerror.h>
 #include "types.h"
 
-void _bnkfPatchBank(ALBank *bank, s32 offset, s32 table);
-void _bnkfPatchInst(ALInstrument *inst, s32 offset, s32 table);
-void _bnkfPatchSound(ALSound *s, s32 offset, s32 table);
-void _bnkfPatchWaveTable(ALWaveTable *w, s32 offset, s32 table);
+void _bnkfPatchBank(ALBank *bank, uintptr_t offset, uintptr_t table);
+void _bnkfPatchInst(ALInstrument* inst, uintptr_t offset, uintptr_t table);
+void _bnkfPatchSound(ALSound* s, uintptr_t offset, uintptr_t table);
+void _bnkfPatchWaveTable(ALWaveTable* w, uintptr_t offset, uintptr_t table);
 
 void alSeqFileNew(ALSeqFile *file, u8 *base)
 {
-	intptr_t offset = (intptr_t) base;
+	uintptr_t offset = (uintptr_t) base;
 	s32 i;
 
 	/*
@@ -23,8 +23,8 @@ void alSeqFileNew(ALSeqFile *file, u8 *base)
 
 void alBnkfNew(ALBankFile *file, u8 *table)
 {
-	intptr_t offset = (intptr_t) file;
-	intptr_t woffset = (intptr_t) table;
+	uintptr_t offset = (uintptr_t) file;
+	uintptr_t woffset = (uintptr_t) table;
 
 	s32 i;
 
@@ -45,7 +45,7 @@ void alBnkfNew(ALBankFile *file, u8 *table)
 	}
 }
 
-void _bnkfPatchBank(ALBank *bank, s32 offset, s32 table)
+void _bnkfPatchBank(ALBank *bank, uintptr_t offset, uintptr_t table)
 {
 	s32 i;
 
@@ -69,7 +69,7 @@ void _bnkfPatchBank(ALBank *bank, s32 offset, s32 table)
 	}
 }
 
-void _bnkfPatchInst(ALInstrument *inst, s32 offset, s32 table)
+void _bnkfPatchInst(ALInstrument *inst, uintptr_t offset, uintptr_t table)
 {
 	s32 i;
 
@@ -85,7 +85,7 @@ void _bnkfPatchInst(ALInstrument *inst, s32 offset, s32 table)
 	}
 }
 
-void _bnkfPatchSound(ALSound *s, s32 offset, s32 table)
+void _bnkfPatchSound(ALSound *s, uintptr_t offset, uintptr_t table)
 {
 	if (s->flags) {
 		return;
@@ -100,7 +100,7 @@ void _bnkfPatchSound(ALSound *s, s32 offset, s32 table)
 	_bnkfPatchWaveTable(s->wavetable, offset, table);
 }
 
-void _bnkfPatchWaveTable(ALWaveTable *w, s32 offset, s32 table)
+void _bnkfPatchWaveTable(ALWaveTable *w, uintptr_t offset, uintptr_t table)
 {
 	if (w->flags) {
 		return;