Sharp X1D

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X1 series first model with FDD

(2015/5/11 12:02)

The personal computer introduced this time is Sharp's "X1D" that appeared in November 1983. As a successor to the first generation "X1", it was announced at the same time as the "X1C", and it was the first model in the X1 series to have a 3-inch FDD inside the main unit. On the other hand, with the installation of FDD, there was no high-performance cassette deck that could cue recorded data, so there was a disadvantage that some commercially available software made with excellent cassette control could not be enjoyed. By the way, in Sharp's catalog, it is introduced as "a floppy disk that dramatically expands the power of graphic expression" and is nicknamed the "professional type."

・CPU:SHARP LH0080A(Zilog Z80A second source)・Operating frequency: 4MHz(0.004GHz)・Main memory: 64KB(0.000064GB)・Sub CPU:SHARP M80C49-22(Intel 80C49 compatible)・CRTC: Hitachi HD46505SP -2・Number of simultaneous colors: 8 colors ・Text video memory: 2 KB + 2 KB (0.004 MB), text characters + color, control code ・Graphic video memory: 48 KB (0.048 MB) ・Resolution: 640 x 200 dots ・PCG function built-in 6KB (0.006MB)・Sound (PSG): GI AY-3-8910・Simultaneous polyphony: 3 sounds monaural・Storage device: 3 inch FDD・Storage media: 3 inch FD 2D (double-sided double density) compact floppy・Storage device Capacity: 320KB Display device: Digital RGB connection monitor

It is a 2-drive state with the optional "CZ-82F" installed. In addition to the silver model, there is also a rose red model. By the way, the 3-inch FD was introduced as a medium that "can be mailed in an envelope". The top cover is open. An optional expansion I/O port "CZ-8EP" is installed on the back. A view of the back. Main power supply, 6-pin RGB, TV control, extended FDD, printer, volume control, audio line output, reset, joystick 1/2, keyboard from left. Above the keyboard terminal is a terminal for connecting a general-purpose cassette player. system board. Compared to the X1, it looks a little more integrated, but the jumper stands out. Floppy control related is mounted on this sub board. The controller is MB8877 made by Fujitsu. Sub board with graphic memory. The memory capacity is 48KB. How to insert the system disk. Normally, do not release your finger here and push it all in to mount. The contracted CATV station was retransmitting analog terrestrial waves, but it's finally over. From now on, we won't be able to show you the terrestrial superimposed appearance of the X series... On the X1D, the cassette version Mappy worked, but the Xevious didn't work (buying the slightly more expensive FD version will solve the problem). Now let's load Mappy. Since analog terrestrial retransmission has ended, we will no longer be able to wait while watching TV like this while loading cassettes. I can no longer enjoy the superimpose function that displays the TV while playing the game software "Mappy". A cable for connecting an external cassette player that was often used in 8-bit personal computers of the same period. In the X/MZ series, it is used only with the X1D. The terminals are white for audio input, red for audio output, and black for tape play and pause. In this connection method, advanced tape control, which is a feature of X1, cannot be performed. By the way, this problem will be solved in the model after X1D. It is almost the same keyboard as the X1, but the cassette control key has been abolished. This time the cable was severely damaged and could not be used. Comparison between 3 inch FD (top right) and 3.5 inch FD (bottom). Don't worry about the unfamiliar recording density of the 3.5 inch FD (some retro PC systems are included).

・Main body CZ-802C Standard price: 198,000 yen ・Monitor CZ-801D (mask pitch 0.45mm, resolution 560×200) Standard price: 99,800 yen ・Monitor CZ-802D (mask pitch 0.4mm, resolution 640×200) Standard price: 128,000 yen Compact floppy disk drive CZ-82F Standard price 59,800 yen Expansion I/O port CZ-8EP Standard price 29,800 yen Cassette data recorder CE-152 Standard price 29,800 yen (different from the model introduced in the article) Product (for pocket computers listed in the catalog) Compact floppy disk CZ-3FBD Standard price 1,300 yen

*Prices at the time: 40 yen per postcard, 120 yen for JNR (now JR), 430 yen for taxis The smaller the number, the higher the performance and the finer the resolution.

(Gihei Goto)

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