Macintosh SE Memory Upgrade Guide: Difference between revisions
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The '''Macintosh SE''' utilizes '''30-pin SIMM (Single Inline Memory Module) chips''' and supports the following configurations: | The '''Macintosh SE''' utilizes '''30-pin SIMM (Single Inline Memory Module) chips''' and supports the following configurations: | ||
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|+ '''Macintosh SE RAM Configurations''' | |+ '''Macintosh SE RAM Configurations''' | ||
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* The '''Macintosh SE''' requires SIMMs with '''150 ns or faster''' access time. | * The '''Macintosh SE''' requires SIMMs with '''150 ns or faster''' access time. | ||
* '''All four SIMM slots must be populated with memory of the same capacity''' unless using a '''2.5 MB mixed configuration'''. | * '''All four SIMM slots must be populated with memory of the same capacity''' unless using a '''2.5 MB mixed configuration'''. | ||
** If using the '''2.5 MB configuration''', install the | ** If using the '''2.5 MB configuration''', install the 1 MB SIMMs in Slots 1/2 and 256 KB SIMMs in Slots 3/4. | ||
* If using '''1 MB SIMMs''', '''you must clip the R35 resistor''' on Rev 1 logic boards, or, move the jumper in the same location on Rev 2 boards. | * If using '''1 MB SIMMs''', '''you must clip the R35 resistor''' on Rev 1 logic boards, or, move the jumper in the same location on Rev 2 boards. | ||
[[File:Mac SE (Soldered) Guide.png|none|thumb|520x520px|Macintosh SE (Soldered) Memory Upgrade Guide]] | [[File:Mac SE (Soldered) Guide.png|none|thumb|520x520px|Macintosh SE (Soldered) Memory Upgrade Guide]] | ||
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* If upgrading to 4 MB using 1 MB SIMMs, clip the leg on the R35 resistor, or move the jumper on the logic board. | * If upgrading to 4 MB using 1 MB SIMMs, clip the leg on the R35 resistor, or move the jumper on the logic board. | ||
* If using a 2.5 MB mixed configuration, install 1 MB SIMMs in | * If using a 2.5 MB mixed configuration, install 1 MB SIMMs in Slots 1/2 and 256 KB SIMMs in Slots 3/4. | ||
'''Step 6: Reassemble the Macintosh SE''' | '''Step 6: Reassemble the Macintosh SE''' | ||
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== ❗ Common Issues and Troubleshooting == | == ❗ Common Issues and Troubleshooting == | ||
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! Issue !! Possible Cause !! Solution | ! Issue !! Possible Cause !! Solution | ||
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* [[Macintosh SE General Maintenance]] | * [[Macintosh SE General Maintenance]] | ||
* [[Sad Mac Error Codes]] | * [[Sad Mac Error Codes]] | ||
* [[Apple Service | * [[:Category:Apple Service Source|Apple Service Source]] | ||
[[Category:Apple Vintage Computers]] | [[Category:Apple Vintage Computers]] | ||
[[Category:Macintosh Memory Upgrades]] | [[Category:Macintosh Memory Upgrades]] | ||
[[Category:Macintosh Hardware Upgrades]] | |||