Category Archives: 4-Extensions

PC-1500 : the full SHARP system

Here is my full SHARP system “in box”.

– PC-1500 small box
– PC-1500 big box with manuals
– PC-1500A big box with manuals
– CE-150 printer and tape interface
– CE-151 4KB memory module
– CE-152 tape recorder
– CE-153 Soft ware board
– CE-154 Briefcase
– CE-155 8KB memory module
– CE-156 Katakana software tape
– CE-157 Katakana ROM module
– CE-158 RS-232C and parallel interface
– CE-159 8KB memory module with write protection
– CE-160 7,8KB Read only memory module
– CE-161 16KB memory module
– CE-162E Tape and parallel interface

The CE-163 2x16KB memory module is missing.
Impossible to find the box. Do you have one ?


TE-1508 : Internal 512KB RAMDisk !

Ok, my tests are OK on the prototype board.


Here are the module features :
– Reference TE-1508
– 512KB of static RAM
– 16 pages of 32KB located in the ME1 zone
– Software selection of the page
– Software Activation/Desactivation (for example the IWS video interface uses same zone in ME1)
– Optional CR-2032 backup battery
– Optional write protection by jumper.

The page selection uses a very special feature of the LH5801 processor which was never being used before… because Sharp never routed this pin !
The data bus can work as a multiplexed bus like the Intel 8052 from the MCS51 family. It means that at one time data are on the bus and another time it’s something else. And this is f… good feature ! I don’t have to use many logical cells. Page 42 of the Technical Reference Manual describe it as the ATP instruction. It pushes the accumulator value on the data bus and provides all signals to store it in a latch. And here we just have to plug an octal latch.

Manual routing is done !
Installing it in your Sharp PC-1500(A) will need some wrapping wires…

I need some tests with the final board and i will tell you the price…

Is it enough to store your programs ? 😀

TEAM1560 : Testing a new module… TE-1508

I’m testing a new hardware to take place inside the PC-1500(A).
The schematics is OK, the circuit board is manually routed.
And i’m testing it with some classic DIP components.

This new module will be the TE-1508, a 512KB RAMDrive.
It’s like 25x the maximum user RAM area.
All this memory is organized in 16x32KB pages with a write protect jumper and a CR2032 battery.
It’s in the first half of the ME1 zone and can be disabled by software. (Remember that the IWS video interface uses the same ME1 zone.)
But installing it inside the PC-1500 will be a big job.

Stay tuned…

CE-154 : The Sharp briefcase for the PC-1500

This is a “must have” item for PC-1500 fans.
Did James Bond have a such briefcase ? No !

When opening it you have :
– PC-1500 or PC-1500A
– CE-150 printer and cassette interface
– CE-152 tape recorder
– CE-153 extended keyboard
– EA-150 power adapter
And under the CE-153 you have a special compartment with
– CE-153 software tape
– CE-156 Katakana software (for Japan briefcase)
– place for up to 4 paper rolls
– place for all cables (CE-153, CE-152, power)
Sharp_CE-154_OpenedFull1    Sharp_CE-154_FullTop

Here is the empty briefcase :
Sharp_CE-154_1    Sharp_CE-154_EmptyTop


You can remove the interior :

And see that it’s a standard briefcase :
Sharp_CE-154_0 Sharp_CE-154_CaseTop

I’m lucky with this one and i have two covers for the interior :
Sharp_CE-154_Empty1 Sharp_CE-154_Empty0

All is explained in this japanese user manual :

CN-2000 : One navigation system for the Sharp PC-1500

If you loose your way ask your PC-1500 !

Here is a small navigation system for the PC-1500 : the CN-2000 from InfoCenter, Inc.
CN-2000 Celestial navigation
EMI_2142 EMI_2143

It’s stored in a very nice wood box.
The CN-2000 can be plugged to a PC-1500 or PC-1500A.
You have a module to connect on the 60 pins connector and a user manual.
EMI_2147 EMI_2148

The module is in a plastic box.
EMI_2149 EMI_2150

But when you open the box… you are far away from a professional system !
The box is not closed by the screws, it’s closed by some silicon glue.
The 4 screws are very short and fixed by the same glue.
And the board looks like self made but not pro with green paint.
EMI_2151 EMI_2152

The program is BASIC and stored in the EPROM. It’s read protected for common users.

Here is the user manual :

If you want to read more about navigation with this module there is “The navigator’s newsletter”
Go to the Newsletter archives…

And i have found a small paper in the Yatching magazine talking about the CN-2000 :
CN-2000 Yatching Oct 88 - 30 CN-2000 Yatching Oct 88 - 31

CE-152 : Inside and problem solving

This morning i received a mail from an australian friend, Bronte, telling me about belts problems in his CE-152.
Do you have problems with your Sharp CE-152 or want to look inside ?

Someone explains this tape recorder better than i can do :

You can find the belts on eBay. But some vendors are very expensive… search… search…
For example : this one in China or this one in UK

BMC : The MC-12 user manual and MC-12A supplement

Hello, we all have to thank AXEL for these documents !
I contacted him some days ago about his MC-12A picture on his website :

He searched everywhere in his hard-drives and found two scans of the manuals.
The pictures had black margins with text inside.
With my favorite image processing software (Aperture) i corrected it, sometimes with letters by letters words reconstructions.

Here are the manuals :


Thanks you again Axel !