STE SIMM Memory Upgrade - Revision history

>Ragnar76: /* Installing the SIMM's */

2012-04-15T15:37:11Z

Installing the SIMM's

@@ Line 15: / Line 15: @@
 The following memory configurations are possible: 512kb, 1mb, 2mb, 2,5mb (See note) & 4 mb.
-<pre>
+{| border="0" cellpadding="2" cellspacing="2" class="sortable" style="cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border-style:solid; border-width:1px; border-collapse:collapse; empty-cells:show; width:{{{1}}}%"
-Desired
+! Desired Memory Size
- Memory    SIMM      SIMM      SIMM      SIMM
+! SIMM Socket 1
-  Size    Socket 1  Socket 2  Socket 3  Socket 4
+! SIMM Socket 2
+! SIMM Socket 3
-KB    256KB     empty     256KB     empty
+! SIMM Socket 4
-MB     256KB     256KB     256KB     256KB
+|-
-MB     512KB     empty     512KB     empty
+| 512KB
-MB     512KB     512KB     512KB     512KB
+| 256KB
-MB     1MB       empty     1MB       empty
+| empty
-MB     1MB       1MB       1MB       1MB
+| 256KB
-.5MB    1MB       256KB     1MB       256KB
+| empty
-</pre>
+|-
 '''Important notes:'''

>Ragnar76: /* Installing the SIMM's */

2012-04-15T15:28:39Z

Installing the SIMM's

← Older revision		Revision as of 11:28, 15 April 2012
Line 22:		Line 22:
	512KB 256KB empty 256KB empty		512KB 256KB empty 256KB empty
	1MB 256KB 256KB 256KB 256KB		1MB 256KB 256KB 256KB 256KB
			1MB 512KB empty 512KB empty
			2MB 512KB 512KB 512KB 512KB
	2MB 1MB empty 1MB empty		2MB 1MB empty 1MB empty
	4MB 1MB 1MB 1MB 1MB		4MB 1MB 1MB 1MB 1MB

>Wongck at 03:23, 19 February 2012

2012-02-19T03:23:04Z

← Older revision		Revision as of 23:23, 18 February 2012
Line 35:		Line 35:
	Text originally from PDF by Greenious		Text originally from PDF by Greenious

	Back to [[~~DIY_Hardware_or_%22mods%22~~]]		<br /><br/>
			Back to [[Hardware hacks]]
	<br />		<br />
	<br />		<br />
	<br />		<br />
	[[Category:Hardware DIY]]		[[Category:Hardware DIY]]

>Wongck at 14:51, 29 November 2011

2011-11-29T14:51:41Z

← Older revision		Revision as of 10:51, 29 November 2011
Line 2:		Line 2:


	~~'''~~Removing the case~~.'''~~		===Removing the case===

	Turn your computer upside down, remove all screws, even the three holding the floppy. Note where the screws are located since they are of different length & dimensions. If you are not careful youâ€™ll end up with screws going through the plastic enclosure.		Turn your computer upside down, remove all screws, even the three holding the floppy. Note where the screws are located since they are of different length & dimensions. If you are not careful youâ€™ll end up with screws going through the plastic enclosure.

Line 9:		Line 8:


	~~'''~~Installing the SIMM's~~'''~~		===Installing the SIMM's===

	As you can see after removing the shielding of your STE, it is equipped with 4 SIMM sockets. Depending on your model and/or previous uppgrade, 2 or 4 of these are already populated. In this guide we will number the sockets 1 thru 4, with number 1 closest to the back, and number 4 being the one closest to the front of the STE. SIMMs in the STE are always installed in pairs. With 2 identical SIMMs in socket 1 & 3 (memory bank 0), or 2 & 4 (memory bank 1).		As you can see after removing the shielding of your STE, it is equipped with 4 SIMM sockets. Depending on your model and/or previous uppgrade, 2 or 4 of these are already populated. In this guide we will number the sockets 1 thru 4, with number 1 closest to the back, and number 4 being the one closest to the front of the STE. SIMMs in the STE are always installed in pairs. With 2 identical SIMMs in socket 1 & 3 (memory bank 0), or 2 & 4 (memory bank 1).

Line 33:		Line 31:
	Going all out with 4mb is really nice, and since SIMMs are abundant today it is cheap too. But keep in mind, that due to some programmers lack of understanding of the hardware, some software (mostly older games) will accidentally write past the 4mb barrier, which causes a hard bus error. So, if some apps/games stops working after the upgrade, just yank 2 mb out and youâ€™ll be safe. This â€bugâ€ is not STE specific, it applies to all STs as well.		Going all out with 4mb is really nice, and since SIMMs are abundant today it is cheap too. But keep in mind, that due to some programmers lack of understanding of the hardware, some software (mostly older games) will accidentally write past the 4mb barrier, which causes a hard bus error. So, if some apps/games stops working after the upgrade, just yank 2 mb out and youâ€™ll be safe. This â€bugâ€ is not STE specific, it applies to all STs as well.

	'''NOTE:''' After you have installed 2.5mb in your STE, it will not configure memory correctly. Your STE will actually believe it has 4mb. If this is a bug in TOS, or because the [[MMU]] officially doesnâ€™t support 2.5mb, Iâ€™ll leave for others to decide. A program called simmfix exists to fix this, and if you do not apply it right after boot, you will find that your STE crashes very easily, in fact, Iâ€™d be surprised if you can do anything but look at the desktop without it crashing.		'''NOTE:''' After you have installed 2.5mb in your STE, it will not configure memory correctly. Your STE will actually believe it has 4mb. If this is a bug in TOS, or because the [[Computer_acronyms#MMU\|MMU]] officially doesnâ€™t support 2.5mb, Iâ€™ll leave for others to decide. A program called simmfix exists to fix this, and if you do not apply it right after boot, you will find that your STE crashes very easily, in fact, Iâ€™d be surprised if you can do anything but look at the desktop without it crashing.

	Text originally from PDF by Greenious		Text originally from PDF by Greenious

>Wongck at 14:49, 29 November 2011

2011-11-29T14:49:56Z

← Older revision		Revision as of 10:49, 29 November 2011
Line 6:		Line 6:
	Turn your computer upside down, remove all screws, even the three holding the floppy. Note where the screws are located since they are of different length & dimensions. If you are not careful youâ€™ll end up with screws going through the plastic enclosure.		Turn your computer upside down, remove all screws, even the three holding the floppy. Note where the screws are located since they are of different length & dimensions. If you are not careful youâ€™ll end up with screws going through the plastic enclosure.

	Turn the [[STE]] back. Now you can remove the upper part. Remove the keyboard, you donâ€™t have to disconnect it. Internally the STE is covered with shielding plates. It consists of 4 parts. Remove the one covering the floppy. To the left of the floppy remove the plate covering the [[SIMM]] sockets.		Turn the [[STE]] back. Now you can remove the upper part. Remove the keyboard, you donâ€™t have to disconnect it. Internally the STE is covered with shielding plates. It consists of 4 parts. Remove the one covering the floppy. To the left of the floppy remove the plate covering the [[Computer_acronyms#SIMM\|SIMM]] sockets.

>Wongck at 15:30, 10 October 2011

2011-10-10T15:30:39Z

← Older revision		Revision as of 11:30, 10 October 2011
Line 41:		Line 41:
	<br />		<br />
	<br />		<br />
	~~[[Category:Hardware Components]]~~[[Category:Hardware DIY]]		[[Category:Hardware DIY]]

>Wongck at 15:27, 10 October 2011

2011-10-10T15:27:25Z

← Older revision		Revision as of 11:27, 10 October 2011
Line 38:		Line 38:

	Back to [[DIY_Hardware_or_%22mods%22]]		Back to [[DIY_Hardware_or_%22mods%22]]
			<br />
			<br />
			<br />
			[[Category:Hardware Components]][[Category:Hardware DIY]]

>Zenichiro: Copied page from Greenious PDF original

2007-09-26T00:45:34Z

Copied page from Greenious PDF original

New page

'''NOTE:''' Before you start, consider the dangers of static electricity. Remove all cables, and ground yourself. Be careful as to not destroy any components with a static discharge. Handle electronic components with care.

'''Removing the case.'''

Turn your computer upside down, remove all screws, even the three holding the floppy. Note where the screws are located since they are of different length & dimensions. If you are not careful youâ€™ll end up with screws going through the plastic enclosure.

Turn the [[STE]] back. Now you can remove the upper part. Remove the keyboard, you donâ€™t have to disconnect it. Internally the STE is covered with shielding plates. It consists of 4 parts. Remove the one covering the floppy. To the left of the floppy remove the plate covering the [[SIMM]] sockets.

'''Installing the SIMM's'''

As you can see after removing the shielding of your STE, it is equipped with 4 SIMM sockets. Depending on your model and/or previous uppgrade, 2 or 4 of these are already populated. In this guide we will number the sockets 1 thru 4, with number 1 closest to the back, and number 4 being the one closest to the front of the STE. SIMMs in the STE are always installed in pairs. With 2 identical SIMMs in socket 1 & 3 (memory bank 0), or 2 & 4 (memory bank 1).

Most SIMMs work, although the STE can only use 256kb & 1 mb SIMMs. Parity is not used in the STE and SIMMs with parity work as well, but have been known to cause problems for some. The speed should be 120ns or faster, usually speed is not a problem, since slower SIMMs are somewhat rare.

The following memory configurations are possible: 512kb, 1mb, 2mb, 2,5mb (See note) & 4 mb.

<pre>
Desired
Memory SIMM SIMM SIMM SIMM
Size Socket 1 Socket 2 Socket 3 Socket 4

512KB 256KB empty 256KB empty
1MB 256KB 256KB 256KB 256KB
2MB 1MB empty 1MB empty
4MB 1MB 1MB 1MB 1MB
2.5MB 1MB 256KB 1MB 256KB
</pre>

'''Important notes:'''

Going all out with 4mb is really nice, and since SIMMs are abundant today it is cheap too. But keep in mind, that due to some programmers lack of understanding of the hardware, some software (mostly older games) will accidentally write past the 4mb barrier, which causes a hard bus error. So, if some apps/games stops working after the upgrade, just yank 2 mb out and youâ€™ll be safe. This â€bugâ€ is not STE specific, it applies to all STs as well.

'''NOTE:''' After you have installed 2.5mb in your STE, it will not configure memory correctly. Your STE will actually believe it has 4mb. If this is a bug in TOS, or because the [[MMU]] officially doesnâ€™t support 2.5mb, Iâ€™ll leave for others to decide. A program called simmfix exists to fix this, and if you do not apply it right after boot, you will find that your STE crashes very easily, in fact, Iâ€™d be surprised if you can do anything but look at the desktop without it crashing.

Text originally from PDF by Greenious

Back to [[DIY_Hardware_or_%22mods%22]]