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Old Computer-related pictures and photos
 Picture 4 of 26  |
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Rear: RF output, channel trimer, BW/COlor/ switch, composite o/p,
RGB o/p. Below are cassette i/o jack. Next system DIP switches,
2 Joystick connectors (covered with plate), printer port, volume
knob, reset switch, AC in and DC out below (to printer), ends
with power switch. In upper half expansion bay. |
General View
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Keyboard detail
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Front sticker
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Rear: RF output, channel trimer, BW/COlor/ switch, composite o/p,
RGB o/p. Below are cassette i/o jack. Next system DIP switches,
2 Joystick connectors (covered with plate), printer port, volume
knob, reset switch, AC in and DC out below (to printer), ends
with power switch. In upper half expansion bay.
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Expansion bay inside - 2 slots.
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Back sticker
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Peripheral covers removed. Internal tape recorder is connected to
the white connector on the left of RF modulator can
(here bridged with 3 blue/black wires).
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Inside
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Mainboard general view
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Memory. Notice quite good speaker.
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CPU, ROM and parallel I/O chips.
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PLA, video RAM expansion sockets (two 16k*4 DRAM goes here),
8255 parallel circuit
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Boot screen
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Monitor program
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Loading BASIC...
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Basic itself.
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MZ-821: General view
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MZ-821: Tape recorder
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MZ-821: Tape recorder isnide
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MZ-821: Place for cassette
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MZ-821: Keyboard PCB
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MZ-821: Memory is from different manufacturer
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MZ-821: Mainboard
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MZ-821: Modulator PCB
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MZ-821: Under the modulator
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MZ-821: Modulator components
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Gallery generated by SPGM, Terminal theme by MCbx. |
All pictures are:  .
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