Differences

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--- acorncomputers [2018-01-06 21:27] – tim
+++ acorncomputers [2018-01-29 11:53] – tim
@@ Line 11: / Line 11: @@
   * No Econet module.
-BBC Master 128 (01-AMB15-0011778)
+<del>BBC Master 128 (01-AMB15-0011778)
   * No PSU
@@ Line 21: / Line 21: @@
   * Keyboard missing "8" key
   * Keyboard has damaged ribbon cable
-  * OS ROM appears upgraded with a stacked socket (VLI / 551 VM 9481 / 231024-1028 / 0201,843-0 / Acorn / SING-T)
+  * OS ROM appears upgraded with a stacked socket (VLI / 551 VM 9481 / 231024-1028 / 0201,843-0 / Acorn / SING-T)</del>
 BBC Model B (Hacklab asset #27)
@@ Line 33: / Line 33: @@
   * No screws
   * Case: yellowed, dirty, faint marker pen, ROM slot open, clear keystrip chipped and broken (repaired with tape)
+  * **Borrowed by Tim H to clean and repair**
-BBC Model B (Hacklab asset #21)
+<del>BBC Model B (Hacklab asset #21)
   * Issue 7
@@ Line 41: / Line 42: @@
   * WE 32K RAMCARD
   * ROM fitted: 1770 DFS
-  * ROM fitted: WE 3K RAM
+  * ROM fitted: WE 32K RAM
   * No Econet
   * No keyboard
-  * Not working (motherboard known to be faulty)
+  * Not working (motherboard known to be faulty)</del>
 Accessories
   * Microvitec CUB 1451, serial number 128754, metal/cube, working, dirty, missing one case screw
-  * Microvitec CUB 1451/DS4, serial number 272506, plastic
+  * <del>Microvitec CUB 1451/DS4, serial number 272506, plastic</del>
   * RGB cable - 2m moulded, new
   * RGB cable - 1m DIY
   * RGB cable - 1m DIY
-  * Watford Electronics dual 5.25" floppy drives in monitor plinth
+  * Watford Electronics dual 5.25" floppy drives in monitor plinth - Switchable 40/80 track. Appears to work.
+  * Stag SE15 PROM eraser [Al]
-Parts
+<del>Parts
   * Model B keyboard 21242 - no keys, some missing switches
   * Model B keyboard 12252 - all keys present, some track damage and repairs, bent connector
-  * Model B keyboard 05042 - all keys present, reasonable condition but untested, ribbon cable included
+  * Model B keyboard 05042 - all keys present, reasonable condition but untested, ribbon cable included</del>
 Box 1
@@ Line 89: / Line 91: @@
   * Model B keyboard ribbon cable
   * 5.25" floppy drive mechanism (marked "Do not use, I eat discs")
-  * Watford Electronics single 5.25" floppy drive (computer-powered)
+  * Watford Electronics single 5.25" floppy drive (computer-powered) - 80 track only, appears to work.
-  * Watford Electronics dual/stacked 5.25" floppy drive (computer-powered) - Belongs to Al
+  * Watford Electronics dual/stacked 5.25" floppy drive (computer-powered) - 40 track only, Belongs to Al
 Box 2
+  * Books (see separate list)
   * Assorted 5.25" floppy discs
-  * Books (see separate list)
+  * Blank 5.25" floppy discs
-Box 3
-  * Books (see separate list)
   * Cassette recorder
-  * 5.25" blank floppy discs
   * R6522P ICs (x3)
   * The Hobbit (cassette for BBC Micro, Beam Software 1983)
@@ Line 147: / Line 145: @@
 [[http://wouter.bbcmicro.net/hardware/repair/index.html|Some debugging information]]
+===== Todo =====
+  * Decide what to keep
+  * Clean the ones that we keep
+  * Fixes to the kept Model B:
+    * Remove stray jumper wire
+    * Re-fit composite video connector
+    * Swap broken clear keystrip with other Model B
+    * Consider 1770 upgrade (take from other Model B)
+  * Fit Econet to kept computers
+  * Test floppy drives
+Keep:
+  * one BBC Master (the one that's working)
+  * one BBC Model B (the one that's working)
+  * single 5.25" floppy drive
+  * 6502 Second Processor (they're rare)
+  * 1 CUB monitors (the one with the classic boxy metal case)
+  * a few books
+Dispose of:
+  * Non-working BBC Master
+  * Non-working BBC Model B
+  * floppy-drive/monitor-stand
+  * 1 CUB monitor
 ===== See Also =====
 We're going to build an [[econet]].