Back to the BASIC from DOS

By gdx

Enlighted (6437)

10-12-2021, 11:03

Hello,

I looking for to do the same thing as the BASIC command in assembler to back to the BASIC environment from DOS1.

Is there a solution to do this?

By aoineko

Paragon (1138)

10-12-2021, 14:00

If you can find here the BASIC routine is into the command.com file in RAM, maybe you call it from your program?
(just a guess)

By gdx

Enlighted (6437)

10-12-2021, 14:23

In fact, I would just like to set into BASIC environment, I don't need to run a program file in BASIC. I would like to know if there is a standard way of doing it.

I try that program below but it doesn't work well.

	ld	a,(EXPTBL)
	ld	h,40h
	call	ENASLT

	ld	a,(EXPTBL)
	ld	h,00h
	call	ENASLT

	jp	0409Bh

By zeilemaker54

Champion (355)

10-12-2021, 17:53

BASENT should work:

ENASLT equ 0024H
MASTER equ 0F348H
BASENT equ 04022H

LD A,(MASTER)
LD H,40H
CALL ENASLT
JP BASENT

By aoineko

Paragon (1138)

10-12-2021, 18:24

https://www.msx.org/wiki/Disk-ROM_BIOS#4022H

By zeilemaker54

Champion (355)

10-12-2021, 20:15

aoineko wrote:

https://www.msx.org/wiki/Disk-ROM_BIOS#4022H

unfortunately with a bad code example. The slotid of the master DOS kernel ROM should be taken from MASTER and not from the first entry of DRVINF

By gdx

Enlighted (6437)

11-12-2021, 08:19

BASENT works like a charm. Thank you guys !

By zeilemaker54

Champion (355)

11-12-2021, 12:22

zeilemaker54 wrote:

aoineko wrote:

https://www.msx.org/wiki/Disk-ROM_BIOS#4022H

unfortunately with a bad code example. The slotid of the master DOS kernel ROM should be taken from MASTER and not from the first entry of DRVINF

I have updated the WIKI

By gdx

Enlighted (6437)

11-12-2021, 14:14

BASENT is called STBAS (cold STart BASic) in my docs.

By zeilemaker54

Champion (355)

12-12-2021, 13:50

gdx wrote:

BASENT is called STBAS (cold STart BASic) in my docs.

I am curious about the source you are using for the name of the entry. I am refering to the name being used on the msxdos kit disk.