does anyone in the #MSX community know if there's a #MSXDOS1 program that will #software #emulate #80column mode?

Since I do net yet have any sort of mass-storage device for my physical #MSX machine, I set up a 360KB disk drive in #OpenMSX and am now testing the dutch #WBASS2 #Assembler which I put on a #MSXDOS1 formatted disk (image).

So here I am, raw writing to the #TMS9918A video port (the "AAAAA" output).