oldcomp:att3b1

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oldcomp:att3b1 [2018/12/14 08:39] – created philpemoldcomp:att3b1 [2020/07/11 11:58] (current) – removed philpem
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-====== AT&T UNIX PC emulator ====== 
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-I'm developing an emulator for the AT&T UNIX PC. Currently it can boot the 3B1 UNIX operating system and run acceptably. 
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-{{:oldcomp:att3b1:freebee.png?direct&600|}} 
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-===== Downloads ===== 
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-The source code is hosted on Bitbucket: [[https://bitbucket.org/philpem/freebee]] 
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-You will also need the {{:oldcomp:att3b1:3b1_roms.zip|Boot ROMs}}. 
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-===== Technical documentation ===== 
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-Steven Hirsch scanned the entire two-binder 3B1 UNIX PC Technical Reference and released them on the [[http://www.classiccmp.org|Classic Computers Mailing List]]. With his permission, his scans are mirrored here. 
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-==== Reference Manual ==== 
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-  * {{ :oldcomp:att3b1:trm:3b1_hardware_ref_ch_1_2.pdf |AT&T UNIX PC Reference Manual (chapters 1 and 2)}} 
-  * {{ :oldcomp:att3b1:trm:3b1_hardware_ref_ch_3_4.pdf |AT&T UNIX PC Reference Manual (chapters 3 and 4)}} 
-  * {{ :oldcomp:att3b1:trm:3b1_pal_eqns.pdf |AT&T UNIX PC Reference Manual (appendix A: PAL equations)}} 
-  * {{ :oldcomp:att3b1:trm:3b1_mnemonics.pdf |AT&T UNIX PC Reference Manual (appendix B: Mnemonics)}} 
-  * {{ :oldcomp:att3b1:trm:3b1_mem_exp.pdf |AT&T UNIX PC Reference Manual (appendix C: Expansion memory locations)}} 
-  * {{ :oldcomp:att3b1:trm:3b1_intl_version.pdf |AT&T UNIX PC Reference Manual (International Version Supplement)}} 
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-==== Circuit diagrams and schematics ==== 
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-  * {{ :oldcomp:att3b1:trm:3b1_s4_cpu_ps.pdf |AT&T UNIX PC Schematics: D-08-00222-00 "Schematic: S4, CPU"}}; alternate versions: {{ :oldcomp:att3b1:trm:3b1_s4_cpu_ps_1mb.pdf |1}}, {{ :oldcomp:att3b1:trm:3b1_s4_cpu_ps_2mb.pdf |2}} 
-  * {{ :oldcomp:att3b1:trm:3b1_dma_addr_schem.pdf |AT&T UNIX PC Schematics: D-32-00379-00 "DMA Address I.C."}} 
-  * {{ :oldcomp:att3b1:trm:3b1_video_schem.pdf |AT&T UNIX PC Schematics: D-32-00381-00 "Video I.C."}} 
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-==== Peripherals ==== 
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-  * DOS-73 Technical Reference (no schematics) 
-  * Ethernet Expansion Board: Theory of Operation (includes schematics) 
-  * Floppy Tape Interface: Theory of Operation (includes schematics) 
-  * RAM-COMM Expansion Board: Theory of Operation (includes schematics) 
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-==== System bus specification ==== 
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  • Last modified: 2018/12/14 08:39
  • by philpem