Sharp MZ-800 Service Manual

SHARP SERVICE MANUALCODE: OOZMZ8OOIIIIEPERSONAL COMPUTERMODEL MZ-800MZ-1P16MZ-1E20Table of contentst, Specification ..2. Parts identification ..3. Systemdiegram ..4. Systemdescriplion ..4·', Memorymep ..4-2. CustomLSI .....4-2-1. Memoryconlroller ...4-2-2. VOcontroller ..4-2-3. Clock generator end timing generator ..4-2-4. Display address generator ...4-2-5. Scroll control circuit ...... .................................... 4................................................... 6.. 999. ....................... 12.. ......... 12.. ..... 13. ......................................... 154·2·6. VRAMdeta inputloutpulcircuil ..4-2-7. Register functions .... .............................................................. 204-2-8. Pal1etcircuit ..... .. ........... 254-2-9. CRTC register map •. . ................................ 264-2-10. ROMconfigufation ... .. ............................................. 274-3. 8255 Programmable Peripheral Interface ...4-4. 8253 Programmable Interval Timer ........... ................................ 27.. ...... 314-5. Printer interface ..4-6. Programmable sound generator .•4-7. Joystick ..4-8.Systemswitchsetups ...5. Powersupply .....MZ-1P16 ...... .................................................. 31.................................................................. 34......... 35. ..................................................... 35.. ......................................................... 35. ................................................... 35SHARP CORPORATION