> To be fair, the Mac alternative at the time was "Don't do that."
Well, no. The Mac alternative to DOS TSRs that loaded in High Memory would be Desk Accessories.
>Introduced in 1984 as part of the operating system for the Apple Macintosh computer, a Desk Accessory (DA) was a piece of software written as a device driver, conforming to a particular programming model. The purpose of this model was to permit very small helper-type applications to be run concurrently with any other application on the system. This provided a small degree of multitasking on a system that initially did not have any other multitasking ability.
Well, no. The Mac alternative to DOS TSRs that loaded in High Memory would be Desk Accessories.
>Introduced in 1984 as part of the operating system for the Apple Macintosh computer, a Desk Accessory (DA) was a piece of software written as a device driver, conforming to a particular programming model. The purpose of this model was to permit very small helper-type applications to be run concurrently with any other application on the system. This provided a small degree of multitasking on a system that initially did not have any other multitasking ability.
https://en.wikipedia.org/wiki/Desk_accessory