I have a Futurlec CP-AT32 Plus V2 development board. This board contains a Philips P89C51RD2 processor, with 64k of program memory. 32k of RAM is located on the board, mapped to addresses through 0x7fff. Three 8255 ports are mapped starting at 0x8000. I have successfully loaded and ran simple programs written in BASCOM-8051 using this board.

I downloaded BAS52 from this site, loaded and verified it. When I power up and hit the space bar, I get the BAS52 prompt, but then it acts weird. Direct statements, such as math functions, work. But if I type in program lines, they do not take. Also, sometimes when I set variables they get set to values other than what I entered.

I realize that I will not be able to run assembly language programs from BAS52, since the RAM on this board is not mapped into external code space. But shouldn't I be able to run BASIC programs? I have tried reloading several times, using different versions of BAS52, and even downloaded BAS52 from another site. I always get the same results. Any ideas what I might be doing wrong?

Attached is a sample session below.

Thanks,
Frank Kienast

*MCS-51(tm)BASIC V1.1b*
READY
>PRINT MTOP
32767

>PRINT FREE
32255

>10 PRINT "HELLO"
>LIST

READY
>PRINT LEN
1

>NEW

>10 PRINT "TESTING"
>LIST

READY
>PRINT LEN
1

>PRINT FREE
32255

>PRINT SQR(2)
1.4142136

>PRINT SQR(5)
2.236068

>A=SQR(2)

>PRINT A
1.4142136

>B=7

>PRINT B
0.0810081

>A=7

>PRINT A
7

>C=98

>PRINT C
98

>D=77

>PRINT D
77

>B=54

>PRINT B
00.820082

>Z=-5

>PRINT Z
-5

>Z=66

>PRINT Z
66

>LIST

READY
>NEW

>RAM

READY
>LIST

READY
>PRINT LEN
1

>10 PRINT SQR(2)
>RUN

READY
>LIST

READY
>PRINT LEN
1

>PRINT MTOP
32767

>PRINT FREE
32255

>