What is I-APL/Mac 1.1B?

I-APL is designed for educational use. It is primarily a learning tool.

It is a complete APL and conforms to the International Standards Organisation standard for APL (which is also expected to become a British Standard).

Its execution speed is adequate for learning purposes provided that array sizes are kept small enough to be displayed on a single screen. Its workspaces are large enough for complex work to be done on such arrays, but as workspace and interpreter (and, in some machines, operating system scratch memory, buffers and screen memory) all have to be contained in a 64K address space, no machine will be able to provide a clear workspace of more than 32K, however large its memory.

To reduce the size of arrays of real (floating point) numbers they are held in I-APL less precisely than in commercial APLs. The accuracy of logarithmic and trigonometrical functions is also less than most commercial systems; these limitations are to make the interpreter as economical of space and as fast as possible.

The ISO standard does not require that a filing system is provided and I-APL does not include one. Nor does it include commercial formatting or a full screen facility.

I-APL does not cater for nested or heterogeneous arrays or the extended functions and operators of enhanced APLs.

I-APL Limited. (1991). IAPL Manual. Electronic Document.

Download I-APL/Mac 1.1B for Mac

Architecture

Motorola 68K

Compatibility notes

Emulating this? It could probably run under: Mini vMac