This is a simulator of CASIO's Pocket Computer PB-100. It reproduces the unique BASIC of the PB-100 generation. (Omitting the closing parentheses of calculation formula, using variables in the destination of GOTO, etc. ..) You can input and output BASIC text file by load and save menu. And sound data compatible with cassette I / F is analog output by SAVE command. ＜Supported BASIC instraction＞ PRINT INPUT GOTO GOSUB-RETURN FOR-TO-STEP-NEXT IF-THEN/IF-; VAC CLEAR/CLEAR A RUN LIST END KEY CSR DEFM MID VAL SIN/COS/TAN/ASN/ACS/ATN LOG/LN/EXP/SQR ABS SGN INT FRAC RND RAN# STOP SAVE ON GOTO / ON GOSUB READ DATA RESTORE STR$ KEY$ MID$ BEEP LET ＜Setting menu＞ ・cpu clock emulate 　Putting some wait of execution and realize the operation close 　to the actual machine. ・memory unit 　Setting whether extended memory exists or not. 　It only changes the remaining memory display. ・UI design 　When set to 'PB-100 compatible' it will be like PB-100. 　When set to 'PB-100 custom' the 'F'key and '↑','↓'key is enabled. ・viblation 　It vibrates when the key is pressed. ・debug 　It displays debug messages and a frame of software keys. ＜About Special Symbols＞ In the input/output file, PB special symbols are converted to escape characters. Invalid except ASCII code. \\ ¥ \LE(or =) Greater Equal \LA Left Arrow \DA Down Arrow \RA Right Arrow \UA Up Arrow \PI PI \EX EXponent \CI CIrcle \SQ SQuare \TR TRiangle \CR CRoss \DV DiVide \DT DoT \DG DeGree \SP SPade \HT HearT \DI DIa \CL CLover \BX Box \SG SiGma \OM OMega \MU MU ＜Other＞ Spaces between instructions and parameters can be omitted. (ex.) PRINT CSR1;"ABC" SINA etc. If you press the '←' key after manual calculation, the previous command will be displayed. Step count calculation is not accurate. There are some errors with the actual machine. Program trace execution is not implemented yet. Moreover, the program can not resume after interruption. It will only be finished.