32MB RAM expansion - Revision history

Darc: /* Incompatibility issues */

2024-07-08T15:15:36Z

Incompatibility issues

← Older revision		Revision as of 15:15, 8 July 2024
Line 16:		Line 16:

	==Incompatibility issues==		==Incompatibility issues==
	Existing games and applications predating this RAM expansion modification will not be able to take advantage of the additional memory. Adoption of the mod is not yet widespread, so additional testing is needed. At this time, the major incompatibility issues are 1. Sofdec video playback in commercial games ~~and 2. Windows CE. Games using Sofdec video will fail to play FMV, crashing and rebooting~~ the ~~console as a result.~~ Windows CE games ~~will not boot and either~~ hang ~~or reboot~~ the system. More research is needed to determine if these issues can be fixed in patches. Games that ~~don't~~ use ~~Sofdec video appear to work without problem, even including~~ other types of video like the 4XM video used in [[Headhunter]].		Existing games and applications predating this RAM expansion modification will not be able to take advantage of the additional memory. Adoption of the mod is not yet widespread, so additional testing is needed. At this time, the major known incompatibility issues are
			# Sofdec video playback in commercial games crashes or hangs the system
			# Windows CE games crash or hang the system at boot
			More research is needed to determine if these issues can be fixed in patches. Games that use other types of video playback (like the 4XM video used in [[Headhunter]]) seem to work fine.

	==Applications==		==Applications==

Darc: /* KallistiOS */

2023-09-28T15:58:32Z

KallistiOS

← Older revision		Revision as of 15:58, 28 September 2023
Line 20:		Line 20:
	==Applications==		==Applications==
	===KallistiOS===		===KallistiOS===
	[[KallistiOS]] ~~currently~~ supports 32MB expansion ~~when using the GCC 4.7.4 (current stable) or GCC 9.3.0 (current testing) toolchains~~.		[[KallistiOS]] [https://github.com/KallistiOS/KallistiOS/pull/82 supports] the 32MB expansion mod. Applications built will function on 16MB or 32MB systems, but the programmer can support features with heavier memory use on 32MB systems. The following code block provides a primer on the use:

	Applications built will function on 16MB or 32MB systems, but the programmer can support features with heavier memory use on 32MB systems. The following code block provides a primer on the use:
	<syntaxhighlight lang="c">/* HW_MEM_16 and HW_MEM_32 macros define the memory sizes KallistiOS supports */		<syntaxhighlight lang="c">/* HW_MEM_16 and HW_MEM_32 macros define the memory sizes KallistiOS supports */
	printf("KallistiOS supports systems with %d or %d bytes of memory installed.\n", HW_MEM_16, HW_MEM_32);		printf("KallistiOS supports systems with %d or %d bytes of memory installed.\n", HW_MEM_16, HW_MEM_32);

Darc: /* Emulators */

2023-09-28T15:54:51Z

Emulators

← Older revision		Revision as of 15:54, 28 September 2023
Line 61:		Line 61:

	==Emulators==		==Emulators==
			===Flycast===
			Support has been [https://github.com/flyinghead/flycast/pull/1198 added to the development version of Flycast].
	===lxdream Dreamcast Emulator===		===lxdream Dreamcast Emulator===
	[https://gitlab.com/simulant/community/lxdream-nitro lxdream-nitro] supports 32MB expansion when run with the <code>--ram-size=32</code> option.		[https://gitlab.com/simulant/community/lxdream-nitro lxdream-nitro] supports 32MB expansion when run with the <code>--ram-size=32</code> option.

Darc: /* Incompatibility issues */

2023-08-30T14:33:25Z

Incompatibility issues

← Older revision		Revision as of 14:33, 30 August 2023
Line 16:		Line 16:

	==Incompatibility issues==		==Incompatibility issues==
	Existing games and applications predating this RAM expansion modification will not be able to take advantage of the additional memory. Adoption of the mod is not yet widespread, so additional testing is needed. At this time, the major incompatibility ~~issue is~~ Sofdec video playback in commercial games. ~~These games~~ will fail to play FMV, ~~often hanging or~~ crashing as a result. More research is needed to determine if ~~this issue~~ can be fixed in patches. Games that don't use Sofdec video appear to work without problem, even including other types of video like the 4XM video used in [[Headhunter]].		Existing games and applications predating this RAM expansion modification will not be able to take advantage of the additional memory. Adoption of the mod is not yet widespread, so additional testing is needed. At this time, the major incompatibility issues are 1. Sofdec video playback in commercial games and 2. Windows CE. Games using Sofdec video will fail to play FMV, crashing and rebooting the console as a result. Windows CE games will not boot and either hang or reboot the system. More research is needed to determine if these issues can be fixed in patches. Games that don't use Sofdec video appear to work without problem, even including other types of video like the 4XM video used in [[Headhunter]].

	==Applications==		==Applications==

Unknown user at 06:01, 7 January 2023

2023-01-07T06:01:57Z

@@ Line 19: / Line 19: @@
 ==Applications==
 ===KallistiOS===
 [[KallistiOS]] currently supports 32MB expansion when using the GCC 4.7.4 (current stable) or GCC 9.3.0 (current testing) toolchains.
@@ Line 44: / Line 36: @@
 printf("Top of memory is 0x%0lx!\n", _arch_mem_top);
 /* 0x8e000000 if 32MB, 0x8d000000 if 16MB */</syntaxhighlight>
 ===NetBSD Support===
@@ Line 55: / Line 52: @@
 ===ScummVM===
 tsowell has written a [https://github.com/tsowell/scummvm-dreamcast fork of ScummVM] with extra functionality which is able to play larger games on consoles with 32MB expansion. This version of [[ScummVM]] also offers an extensive array of other expansion hardware features, such as compatibility for loading/saving data with [[Serial SD card adapter|SD cards]] and [[IDE hard drive modification|hard drives]], the ability to output MIDI over [[MIDI adapter|serial]] or [[MIDI expansion|the expansion slot]] for external synthesizers, and the ability to output various VGA modes for CRT monitors.
 ===Game mods===
@@ Line 65: / Line 59: @@
 * Knights of Valour The Seven Spirits (Atomiswave conversion)
 * Super Street Fighter II X

Unknown user: /* lxdream Dreamcast Emulator */

2023-01-03T22:50:59Z

lxdream Dreamcast Emulator

← Older revision		Revision as of 22:50, 3 January 2023
Line 20:		Line 20:
	==Applications==		==Applications==
	===lxdream Dreamcast Emulator===		===lxdream Dreamcast Emulator===
	[https://gitlab.com/simulant/community/lxdream-nitro lxdream-nitro] supports 32MB expansion when ~~built~~ with the <code>-~~DMOD_32MB_RAM~~=~~true~~</code> option.		[https://gitlab.com/simulant/community/lxdream-nitro lxdream-nitro] supports 32MB expansion when run with the <code>--ram-size=32</code> option.
	git clone https://gitlab.com/simulant/community/lxdream-nitro.git		git clone https://gitlab.com/simulant/community/lxdream-nitro.git
	cd lxdream-nitro		cd lxdream-nitro
	meson setup builddir ~~-DMOD_32MB_RAM=true~~		meson setup builddir
	meson compile -C builddir		meson compile -C builddir
	./builddir/lxdream-nitro -h		./builddir/lxdream-nitro --ram-size=32

	===KallistiOS===		===KallistiOS===

Unknown user: /* memtest */

2023-01-03T02:08:36Z

memtest

← Older revision		Revision as of 02:08, 3 January 2023
Line 57:		Line 57:

	===memtest===		===memtest===
	A memory testing utility supporting 16MB and 32MB Dreamcasts has been written by tsowell. [~~[:File~~:~~Memtest~~.~~tar~~.~~gz]]~~		A memory testing utility supporting 16MB and 32MB Dreamcasts has been written by tsowell and adapted for [https://github.com/KallistiOS/KallistiOS/tree/master/examples/dreamcast/basic/memtest32 inclusion in KalllistiOS as an example].

	===Game mods===		===Game mods===

Unknown user: /* lxdream Dreamcast Emulator */

2023-01-03T01:26:48Z

lxdream Dreamcast Emulator

← Older revision		Revision as of 01:26, 3 January 2023
Line 20:		Line 20:
	==Applications==		==Applications==
	===lxdream Dreamcast Emulator===		===lxdream Dreamcast Emulator===
	A [https://gitlab.com/~~cepawiel~~/lxdream-nitro~~/-/tree/big_ram fork of~~ lxdream-nitro] ~~by [[cepawiel]] exists which can be built to support~~ 32MB expansion.		[https://gitlab.com/simulant/community/lxdream-nitro lxdream-nitro] supports 32MB expansion when built with the <code>-DMOD_32MB_RAM=true</code> option.
	git clone ~~-b big_ram~~ https://gitlab.com/~~cepawiel~~/lxdream-nitro.git		git clone https://gitlab.com/simulant/community/lxdream-nitro.git
	cd lxdream-nitro		cd lxdream-nitro
	meson setup builddir -DMOD_32MB_RAM=true		meson setup builddir -DMOD_32MB_RAM=true

Unknown user: /* KallistiOS */

2023-01-03T00:32:13Z

KallistiOS

← Older revision		Revision as of 00:32, 3 January 2023
Line 28:		Line 28:

	===KallistiOS===		===KallistiOS===
	A [~~https://github.com/darcagn/KallistiOS/tree/32mb-mk4 fork of~~ KallistiOS] ~~exists which~~ supports 32MB expansion~~, with an aim to be merged into~~ the ~~main repository soon~~. ~~To build it, build both the toolchain and KallistiOS [[Getting Started with Dreamcast development\|using the instructions here]], but clone the git repository using this command instead:~~		[[KallistiOS]] currently supports 32MB expansion when using the GCC 4.7.4 (current stable) or GCC 9.3.0 (current testing) toolchains.
	~~git clone -b 32mb-mk4 https://github~~.~~com/darcagn/KallistiOS~~.~~git kos~~
	~~If you already have an existing toolchain built, you must rebuild it to support 32MB expansion~~.

	Applications built will function on 16MB or 32MB systems, but the programmer can support features with heavier memory use on 32MB systems. The following code block provides a primer on the use:		Applications built will function on 16MB or 32MB systems, but the programmer can support features with heavier memory use on 32MB systems. The following code block provides a primer on the use:

Unknown user: /* KallistiOS */

2023-01-02T22:16:34Z

KallistiOS

← Older revision		Revision as of 22:16, 2 January 2023
Line 28:		Line 28:

	===KallistiOS===		===KallistiOS===
	A [https://github.com/darcagn/KallistiOS/tree/~~amx3~~-~~32mb~~ fork of KallistiOS] exists which supports 32MB expansion, with an aim to be merged into the main repository soon. To build it, build both the toolchain and KallistiOS [[Getting Started with Dreamcast development\|using the instructions here]], but clone the git repository using this command instead:		A [https://github.com/darcagn/KallistiOS/tree/32mb-mk4 fork of KallistiOS] exists which supports 32MB expansion, with an aim to be merged into the main repository soon. To build it, build both the toolchain and KallistiOS [[Getting Started with Dreamcast development\|using the instructions here]], but clone the git repository using this command instead:
	git clone -b 32mb-~~mk2~~ https://github.com/darcagn/KallistiOS.git kos		git clone -b 32mb-mk4 https://github.com/darcagn/KallistiOS.git kos
	If you already have an existing toolchain built, you must rebuild it to support 32MB expansion.		If you already have an existing toolchain built, you must rebuild it to support 32MB expansion.

	Applications built will function on 16MB or 32MB systems, but the programmer can support features with heavier memory use on 32MB systems. The following code block provides a primer on the use:		Applications built will function on 16MB or 32MB systems, but the programmer can support features with heavier memory use on 32MB systems. The following code block provides a primer on the use:
	<syntaxhighlight lang="c">/* HW_MEM_16 and HW_MEM_32 macros define the memory sizes KallistiOS supports */		<syntaxhighlight lang="c">/* HW_MEM_16 and HW_MEM_32 macros define the memory sizes KallistiOS supports */
	printf("KallistiOS supports systems with %d or %d ~~kilobytes~~ of memory installed.\n", HW_MEM_16, HW_MEM_32);		printf("KallistiOS supports systems with %d or %d bytes of memory installed.\n", HW_MEM_16, HW_MEM_32);

	/* The ~~hardware_memsize() function~~ can be called to retrieve the running system's size */		/* The HW_MEMSIZE macro can be called to retrieve the running system's size */
	printf("~~hardware_memsize()~~ reports this system has %~~d kilobytes~~.\n", ~~hardware_memsize()~~);		printf("HW_MEMSIZE reports this system has %ld bytes.\n", HW_MEMSIZE);
	printf("This is a %s console!\n", (~~hardware_memsize()~~ == HW_MEM_32 ? "32MB" : "16MB" ));		printf("This is a %s console!\n", (HW_MEMSIZE == HW_MEM_32 ? "32MB" : "16MB" ));

	/* The DBL_MEM boolean macro is provided as a fast way to determine if the extra RAM is available */		/* The DBL_MEM boolean macro is provided as a fast way to determine if the extra RAM is available */
	printf("Does the system have double RAM? %s\n", (DBL_MEM ? "Yes!" : "No..."));		printf("Does the system have double RAM? %s\n", (DBL_MEM ? "Yes!" : "No..."));

	/* ~~mm_top()~~ can be used to get the top address of memory */		/* uint32 _arch_mem_top can be used to get the top address of memory */
	printf("Top of memory is 0x%0x!\n", ~~mm_top()~~);		printf("Top of memory is 0x%0lx!\n", _arch_mem_top);
	/* 0x8e000000 if 32MB, 0x8d000000 if 16MB */</syntaxhighlight>		/* 0x8e000000 if 32MB, 0x8d000000 if 16MB */</syntaxhighlight>