diff options
Diffstat (limited to 'src/mame/drivers/icebox.cpp')
-rw-r--r-- | src/mame/drivers/icebox.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/drivers/icebox.cpp b/src/mame/drivers/icebox.cpp index 7ebd68045ae..3a1c7599cd7 100644 --- a/src/mame/drivers/icebox.cpp +++ b/src/mame/drivers/icebox.cpp @@ -108,8 +108,8 @@ on the boards to say which of the four selects it responds to. The three byte fifo and a register jams a zero onto the data bus (when?), and we have the source for the CP/M version of the debugger/boot prom to see how interrupt handling occurs. -When the floppy controller generates a DRQ or INTRQ it also generates a Z80 INT, which uses IM 0 -and forces a NOP (00) onto the bus. This allows firmware and/or disk routines to resume after a HALT. +When the floppy controller generates a DRQ or INTRQ it also generates a Z80 INT, which uses IM 0 +and forces a NOP (00) onto the bus. This allows firmware and/or disk routines to resume after a HALT. I can sort of piece together what Terse implements and what it evolved from. I think it started as the Caltech FORTH implemented for the PDP-10 and 11 with a lot of words stripped out, and others added. This was submitted to DECUS as |