M100 26-3801 24kB SRAM card: Difference between revisions
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== Installation == | == Installation == | ||
1. | 1. Remove the 4 screws and separate top from bottom, so you can access the SRAM sockets. | ||
2. Align and orient the SRAM card over the sockets. | 2. Align and orient the SRAM card over the sockets. | ||
You are installing 24kB in Option RAM 1,2,3. | |||
3. Carefully press the SRAM card until it is fully seated in the sockets. | 3. Gently bend the resistor packs MR2 and MR3 away from the socket to make some space. | ||
4. Gently bend the capacitors C5 C6 C7 away from the sockets to make some space. | |||
5. Carefully press the SRAM card until it is fully seated in the sockets. | |||
Be careful not to bend the pins! | Be careful not to bend the pins! | ||
6. Reassemble the computer, turn on and run a memory test to confirm the installation is good! | |||
== Post-Installation Photos == | == Post-Installation Photos == | ||
| Line 37: | Line 37: | ||
Note: what is shown here is the first prototype. There is a little barnacle on it..please ignore! | |||
== Memory Test == | |||
Here is Paul Globman's MEMCHK.BA, which creates MEMCHK.CO. | |||
Load and run the .DO, then run MEMCHK.CO. | |||
Remember, only 1 beep means 'all good!'. | |||
[[Media:MEMCHK_M100.zip|MEMCHK for M100]] | |||
[[Category:Model T Hardware]] | [[Category:Model T Hardware]] | ||
Revision as of 05:41, 14 July 2021
Add 24kB to your 8kB M100!
Tandy made 2 variants of M100 available - 8kB (26-3801) and 24kB (26-3802). This card provides an additional 24kB to the 26-3801, for a total of 32kB.
This add-on card plugs into the unused SRAM sockets Option RAM #1,2,3 - and provides an additional 24kB in one go!
M100 (8kB 26-3801)
In this image you can see, as indicated by the red box, where the SRAM module should be placed.
Installation
1. Remove the 4 screws and separate top from bottom, so you can access the SRAM sockets.
2. Align and orient the SRAM card over the sockets.
You are installing 24kB in Option RAM 1,2,3.
3. Gently bend the resistor packs MR2 and MR3 away from the socket to make some space.
4. Gently bend the capacitors C5 C6 C7 away from the sockets to make some space.
5. Carefully press the SRAM card until it is fully seated in the sockets.
Be careful not to bend the pins!
6. Reassemble the computer, turn on and run a memory test to confirm the installation is good!
Post-Installation Photos
M100 (8kB 26-3801)
Note: what is shown here is the first prototype. There is a little barnacle on it..please ignore!
Memory Test
Here is Paul Globman's MEMCHK.BA, which creates MEMCHK.CO. Load and run the .DO, then run MEMCHK.CO. Remember, only 1 beep means 'all good!'.
