svn - Revision 5767: /trunk/pdp8/Websites/www.mirrorservice.org/sites/www.bitsavers.org/pdf/tektronix/85xx/8550
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070-3571-00_8550_Editor_Version_4.x_Aug81.pdf
070-3575-01_8550_Cross_Assembler_Core_May83.pdf
070-3576-00_8550_8080_8085_Asm_Apr81.pdf
070-3964-01_8550_Z80_Specifics_Feb84.pdf