Get the Addison-Wesley books: the IIgs
- firmware reference
- hardware reference
- programmer's introduction
- toolbox volumes 1/2/3, System 6 & 6.0.1
- IIgs épluché
Which language will you use for development? For asm, the above are perfect. For C and Pascal, get Byteworks books as well (get the complete Byteworks packages from
juiced.gs)
Antoine