C:Basic - Top Page

C:Basic - Add-In Casio Basic

Update and correction may be made at any time without notice.

1st: 18th Dec. 2015
Updated: 1st Mar. 2018

About C:Basic

C:Basic is an upper comatible Casio Basic which is provided as an Add-In for Casio fx-9860GII USB POWER GRAPHIC 2 (SH4A CPU model). The C:Basic will provide fast interpreter and compiler version. At this moment only interpreter is ready as alpha version., so we call the interpreter version as C.Basic (single dot).

Casio original Casio Basic is a minimal programming language working in limited hardware of calculator, but it's a practical language allowing us to enjoy 'Structured Programming'. Old fans of Programmable calc and poket computer who used to enjoy Basic programming well know that the old Basic requires line number. Unlike such old Basic, current Casio Basic can be categorized as new Generration, so we define current Casio Basic is Caso Basic New Generation. The Casio Basic is very easy-to-use language and you can create programs on your calc only, no PC is required.

You can also create Add-In programs which can be built on your PC with C language SDK and the Add-In runs much faster than the original Casio Basic. Comparing with Add-In, the Casio Basic is very slow to compute complecated calculation with high comlexity and to draw bitmap graphics. In order to improve such weak point of original Casio Basic, we started development of C.Basic (interpreter first) which is compatible with Casio Basic. Currently it gives you much faster computing speed in factor of 10 or 20 than original Casio Basic. Now we know C:Basic (compiler version) is capable to run x10 or more fasterr than interpreter version of C.Basic.

The C:Basic Project is driven by sentaro21 (author of this Add-In), Krtyski (owner of this blog, testing, making sample programs, preparing User's Guide and Command Reference) and some fans of C.Basic.

▋ Latest Test Version of C.Basic
NOTE: This is still an alpha version, so it must includes bugs and there is a possibility to destroy data in your calc (in this case you may need to restart or reset your calc). So it's highly recommneded to make backup of your data before trying C.Basic.

Overclock Add-In: Ftune2

To enjoy fast operation, an over-clock Add-In,
Ftuen2 is recommended to use with C.Basic.
Review following pages for reputation of this program;
@ Unversal Casio Forum
@ TI-Planet

I have used this Add-In over 1 year, there is no problem found so far. Ftuen2 has well considerred safwty features, so it unlikely damages your calc. But please make backup of data of your calc for sure.

Please download Ftune2 for Casio fx-9860GII POWER GRAPHIC 2 (SH4A model), not other editions.

Potential of C.Basic & C:Basic

Let me show you capability of C.Basic and C:Basic with sample program(s).

Conway's Game of Life

C.Basic is upper compatible with original Casio Basic, and has some extended commands and language functions.

If you want to make a fast bitmap graphics program with original Casio Basic, I can say it's reckless try. But with C.Basic you can enjoy programming of Conway's Game of Life as a good example.

- Download:
Game of Life Ver 0.73

To get this speeed, C.Basic Ver 0.83 or later version is requred.

- Download latest version of C.Basic:

In this video, clock is tuned up to 236MHz by Ftune2.

- Download:
   Please be careful to download an edition for Casio fx-9860GII USB POWER GRAPHIC 2 (SH4 model).


To evalaute capability of C:Basic (compiler version), most frequently porcessd codes of Game of Live Ver 0.73 is replaced by a special command "DotLife" to make the codest run at native code speed. 

As you see, it's much faster in factor of 10 until getting to generation 517. Now we believe fully native code by C:Basic (compiler version) should acheive a bit faster computing speed than this case.

How to Use C.Basic

  Installtion of C.Basic
  Check C.Basic readme
  Check of C.Basic version
  Start up C.Basic
  Copy a program in Main Memory to Strage Memory to run in C.Basic
  Copy a program in Storage Memory to Main Memory to run in original Casio Basic
  Make a New program and Edit it
  Cut & Paste in program Editor
  Updating a program source of Prog01 to Prog02
  Setup function of C.Basic
  Run a program
  Use Favorite Program List function
  Refer and Initialze Variables
  Refer and Initialze Matrix/Array
  Refer and setup ViewWindow setting
  How to input commands

C.Basic Command Reference

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Installation of C.Basic

C:Basic - Add-In Casio Basic
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Update and correction may be made at any time without notice.

27th Mar. 2016

How to Use C.Basic

Installation of C.Basic

For the first installation or updating to latest version of C.Basic, down load the C.Basic and transfer it to your fx-9860GII using PC Link software FA124A and USB cable which are included in your fx-9860GII package.

It's simple to transfer C.Basic to your fx-9860GII, Import the downloaded C.Basic to FA-124A and then transfer the C.Basic to your fx-9860GII.

- Download C.Basic

Install FA-124A to your PC

Import C.Basic at FA-124A
Start up FA-124A
Switch to Storage Memory Mode
Import C.Basic to FA-124A

Transfer C.Basic to fx-9860GII
Connect fx-9860GII to FA-124A
Transfer C.Basic
Check transferred C.Basic

Optimization of Memory

Download C.Basic

Download Latest Verion, store in proper folder and unzip the downloaded file (ZIP file). CBASIC.G1A in there is C.Basic Add-in File.

Install FA-124A to your PC

If you want to install FA-124A in your favorite launguage, you should use CD which is included in your fx-9860GII package and select your favorite language before the installation.

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Import C.Basic at FA-124A

Start up FA-124A

When FA-124A is started up, Main Memory mode is selected, in this mode Calc icon button is pushed in.
When mouse cursor comes over the Calc icon button, "Main" is popped up.


Left pane shows files in Calc and right pane shows files imported in FA-124A of your PC. Now you use right pane to import C.Basic Add-In file (CBASIC.G1A) at FA-124A.

fx-9860GII has Main and Storage memory, so FA-124A has also Main and Storage memory mode which you can siwtch each other. At starting-up, FA-124A is in Main memory mode.

An add-in program is installed and used in Storage memory of fx-9860GII. Since C.Basic should be transferred to Storage memory, you should switch FA-124A to Storage memory mode.  

 Switch to Storage Memory Mode

In right pane, click "Storage " mode button (on the right side of Calc icon button) to switch to Storage mode.


 Import C.Basic to FA-124A

Click on "Default" by right button of your mouse, then select "Import" at pop-uped menu.


Then Insert CASIO File dialog is shown, where,
- select folder where CBASIC.G1A is stored,
- select file type as G1A File(*.g1a),
- select CBASIC.G1A,
and click Open(O) button.

Then check if there is CBASIC.g1a in file list at right pane.


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Transfer C.Basic to fx-9860GII

Connect fx-9860GII to FA-124A

Connect fx-9860GII to PC by USB cable, you will see following pop up window (Select Connection Mode) at your calc.


Then push [F1] (DataTrans), then click very left button ("Connect" button) in left pane of FA-124A.


Waiting until connection is completed, then you will see "User1" in left pane.


Transfer C.Basic

Push left button of your mouse on the Impoted CBASIC.g1a in right pane and drug to "User1" in left pane then drop it (Drug & Drop).


Check if there is CBASIC.g1a in file list of left pane.


Check Transferred C.Basic

With your fx-9860GII, push [MENU] key to show MAIN MENU and check if there is C.Basic icon.


Select C.Basic ison and push [EXE] key to run C.Basic.

Starting up C.Basic, you will see File List screen and key in [SHIFT][MENU](SET UP), C.Basic Setup menu is shown.


In Function menu shown in bottom, push [F6](Ver.) key to show version of C.Basic and check is correct version is installed.


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Optimization of Memory

C.Basic itself (add-in file) and Casio Basic source files should be installed in Storage memory. After meny times of file writing, files are fragmanted and actually usable memory size is getting descreased. Optimization solves the fragmentation to get back usable memory area. It's recommended to carry out memory Optimization at the installation or update of C.Basic.

Push [MENU] to show MAIN MENU and select Memory icon,


Push [EXE] key to start Memory Manager.


Then push [F5] (F5: Optimization) key to run memory Optimizarion feature.

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テーマ : プログラム関数電卓
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やす (Krtyski)

Author:やす (Krtyski)
since Oct 30, 2013



なお管理人はカシオ計算機の関係者ではなく、Casio Basicが面白いと感じる1ユーザーです。

写真: 「4駆で泥んこ遊び@オックスフォード郊外」