DOMException when running this DOS image

[parkertomatoes]

I've been using v86 to test old demoscene demos. Many work ok, some don't, but this one seems to cause an exception every time I use it.

Tested on MacOS with Chrome and Firefox

Chrome error:

v86_all.js:174 Uncaught DOMException: Failed to construct 'ImageData': The source width is zero or not a number.
    at p.wd (https://copy.sh/v86/build/v86_all.js:174:287)
    at Ic (https://copy.sh/v86/build/v86_all.js:175:183)
    at p.Dj (https://copy.sh/v86/build/v86_all.js:185:387)
    at zc.f (https://copy.sh/v86/build/v86_all.js:71:63)
    at io_port_write16 (https://copy.sh/v86/build/v86_all.js:380:420)
    at wasm://wasm/0043686a:wasm-function[1047]:0xc540c
    at wasm://wasm/0043686a:wasm-function[989]:0x955fd
    at wasm://wasm/0043686a:wasm-function[990]:0xb845f
    at lb (https://copy.sh/v86/build/v86_all.js:72:704)
    at g.onmessage (https://copy.sh/v86/build/v86_all.js:75:53)

Firefox error:

Uncaught DOMException: An attempt was made to use an object that is not, or is no longer, usable
    wd http://copy.sh/v86/build/v86_all.js:174
    Ic http://copy.sh/v86/build/v86_all.js:175
    Dj http://copy.sh/v86/build/v86_all.js:185
    f http://copy.sh/v86/build/v86_all.js:71
    io_port_write16 http://copy.sh/v86/build/v86_all.js:380
    lb http://copy.sh/v86/build/v86_all.js:72
    onmessage http://copy.sh/v86/build/v86_all.js:75
    l http://copy.sh/v86/build/v86_all.js:75
    ib http://copy.sh/v86/build/v86_all.js:72
    Va http://copy.sh/v86/build/v86_all.js:384
    promise callback*Va http://copy.sh/v86/build/v86_all.js:383
    d http://copy.sh/v86/build/v86_all.js:49
    <anonymous> http://copy.sh/v86/build/v86_all.js:27
    e http://copy.sh/v86/build/v86_all.js:26
    EventListener.handleEvent* http://copy.sh/v86/build/v86_all.js:68
    <anonymous> http://copy.sh/v86/build/v86_all.js:68
[v86_all.js:174](http://copy.sh/v86/build/v86_all.js)

To reproduce:

1. Unzip the attached floppy disk image"
   demo.img.zip
2. From the copy.sh website, run v86 with the floppy image
3. Observe that the emulation stops with a black screen
4. Look at the developer console to see the error

Output on qemu: