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Sharp PC-G850VS
04-16-2018, 08:49 AM
Post: #1
Sharp PC-G850VS
I've seen these before and avoided cos it's from Japan and I'd have import duties VAT etc to pay on top

Anyone got one?

It's looks quite cool
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04-16-2018, 08:58 AM
Post: #2
RE: Sharp PC-G850VS
Found this page and it does indeed look like an interesting machine with a C compiler and Z80 assembler built in.

https://de.wikipedia.org/wiki/Sharp_PC-G850V
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04-16-2018, 09:31 AM
Post: #3
RE: Sharp PC-G850VS
The only snag I see so far, perhaps , is the owners manual might only be in japanese? (as it's a jap market only thing), although the whole GUI/program entry is clearly in english?

I'm currently searching for an english version book
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04-16-2018, 10:26 AM (This post was last modified: 04-16-2018 10:27 AM by Zaphod.)
Post: #4
RE: Sharp PC-G850VS
(04-16-2018 08:58 AM)grsbanks Wrote:  interesting machine with a C compiler

Found elsewhere:
Quote:the C was a bytecode language instead of a true compiler

....perhaps
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04-16-2018, 12:26 PM (This post was last modified: 04-16-2018 12:37 PM by andylithia.)
Post: #5
RE: Sharp PC-G850VS
It's a cool little machine. I've had a lot of fun with it when I first entered the world of real programming, and today the unit is still somewhere in my home boxed.

In my opinion, this perhaps is the most fun-to-play Japanese pokecom (despite its lack of expandability), since it has a big screen, many languages, a system bus port and a handy user port.

Here is a useful English document:
http://silicium.org/forum/viewtopic.php?t=41175
the device is somewhat compatible with legacy pokecoms. Documents for those older Sharp Z80 pokecoms can be useful for assembly programming. I've never gone any deeper tho.

Vintage HP handheld user
Lithcore.cn
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04-16-2018, 12:54 PM
Post: #6
RE: Sharp PC-G850VS
For those who like emulators, PockEmul does also Sharp PC-G850V.

Ciao.....Mike
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04-16-2018, 02:16 PM
Post: #7
RE: Sharp PC-G850VS
(04-16-2018 12:26 PM)andylithia Wrote:  It's a cool little machine. <snip>

Here is a useful English document:
http://silicium.org/forum/viewtopic.php?t=41175
the device is somewhat compatible with legacy pokecoms. Documents for those older Sharp Z80 pokecoms can be useful for assembly programming. I've never gone any deeper tho.

Very nice reference link. Thanks! I have a half-finished PIC burner board based on the design in the second link (I keep getting distracted by other projects!) I have a link to a second, simpler PIC burner design I found on a Japanese BBS that I can post later.

The serial port works as documented, but the Sense/Mark levels are reversed, so you get nonsense on a USB to TTL Serial interface. An inverter would fix that. It also seems to send a long Break before transmitting data.

Lack of documentation is the biggest catch. I've yet too see any of the TAS sellers include a copy or a link to the user manual. As andylithia mentions, it's close enough to some of the earlier models that you can find user manuals online that help with its built-in BASIC and C. I wish I could find more programs and such for it, but relevant Japanese web sites don't turn up often in my regular Google seaches.

If you get one, expect to spend time taking notes and learning to use it. Imagine if the TI Voyage 200 were a discontinued niche product that no one bothered to save documentation for!

~Mark

Cui Bono?
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04-16-2018, 02:33 PM
Post: #8
RE: Sharp PC-G850VS
I own this machine. It has many interesting features.
When I was a student, my calculator was a Sharp PC-1401, which was the first is this line combining a scientific calculator and a Basic pocket computer. Although I liked the 1401, it had some limitations that have been removed in the 850VS. It's a well-designed calculator.
The contrast of the screen is very good, better than the HP 50G.

Unfortunately, there is no English manual. There was recently an attempt to translate in English the German document available in the post pointed above by andylithia, but unfortunately there seems to be no more activity in this project :
http://www.silicium.org/forum/viewtopic....46&t=42449
I've tried myself to translate one chapter, but since I don't understand German, I had to use Google Translate, which is bothersome and certainly inaccurate.

There is another short document describing this machine, but only in French.

Jean-Charles
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04-16-2018, 06:39 PM
Post: #9
RE: Sharp PC-G850VS
Here's the site on which I found the PIC burner schematic as well as a serial interface to the G850. You'll need to run this link (and others) through Google translate, of course:

http://kurikou.sakura.ne.jp/pokekon/index.html

Other comments I've seen indicate the G850's were derived from the PC-E220. The PC-E500 was a follow-on to the E200 series, and its manual can be found on the web.

There is a link to the source for an emulator called g800 below. It emulates the G850, G815 and E200. Who knows what a perusal of the source might reveal?

http://ver0.sakura.ne.jp/

So, it is an interesting model if you don't mind spending your evenings playing Sherlock Holmes, figuring out how to use it!

~Mark
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04-16-2018, 07:02 PM (This post was last modified: 04-16-2018 07:05 PM by Zaphod.)
Post: #10
RE: Sharp PC-G850VS
Tempted I am

I did come across most of the stuff this afternoon that you’ve all linked to , but thanks for the extra’s

The German manual reveals quite a bit actually

http://www.wrabetz.com/computer/resource...german.pdf

And there’s a video on YouTube with someone going through some of the user interface:



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04-16-2018, 10:13 PM
Post: #11
RE: Sharp PC-G850VS
(04-16-2018 07:02 PM)Zaphod Wrote:  Tempted I am

So was I, so was I (and obviously succumbed)

The German language version of the manual really does reveal a capable pocket computer. What other do you know of that allows programming in Z80 and PIC assembly?
Unfortunately one of the annoying shortcomings of the 850 is that it will only print "ERROR xx" if you make a mistake. The error messages themselves are short, vague, and in German Smile

~Mark
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