So LINE is a BASIC token? Or you have to do a CALL? -- John.
On Thu, Sep 12, 2019 at 2:37 PM Kurt McCullum <ku...@fastmail.com> wrote: > In the Option Rom, I push all the code from the ROM to the ALTLCD, then I > populate 65215 & 65216 with the memory location 64448 which is the first > byte of the ALTLCD. That turns the LINE feature in the NEC Basic on. So > whenever the Line function is called, it jumps to the code that is in > ALTLCD. > > That allows me to put a piece of BASIC code at the beginning of the > program that requires LINE. That one liner, calls the 7 byte loader code > which populates the ALTLCD with the LINE code before it starts. And when > the program is finished, ALTLCD can be used for whatever it needs to be > used for. > > Kurt > > On Thu, Sep 12, 2019, at 2:00 PM, John R. Hogerhuis wrote: > > > > On Thu, Sep 12, 2019 at 1:46 PM Kurt McCullum <ku...@fastmail.com> wrote: > > > Thanks Ken. > > That is definitely an option if I want to put the individual Pokes into > the basic program. Which I may end up having to do. I was hoping for some > bit of memory that I could count on always being there but at this point I > am realizing that there may not be such a thing. I have the whole thing > working if I poke the 7 bytes into ram (right now the top of ALTLCD). I can > call that routine and it loads the LINE code into ALTLCD and the BASIC > program is happy to use it. I put another chunk of code in the ROM for the > XFER program and the same approach works to pull it from ROM into ALTLCD > and then run. The only catch right now is the 7 byte load routine has to be > poked into ram and then called. > > > How do you call the LINE routine? > > -- John. > > >
