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- Short: C64 emulator, V2.1
- Uploader: bauec002@goofy.zdv.uni-mainz.de (Christian Bauer)
- Author: bauec002@goofy.zdv.uni-mainz.de (Christian Bauer)
- Type: misc/emu
- Replaces: misc/emu/Frodo.lha
- Version: 2.1
- Requires: AmigaOS 2.1, 68020
-
- Frodo is a multitasking freeware C64 emulator for the Amiga.
- OS2.1 and a 68020 (or better) are required, as well as copys of
- the original C64 ROMs, which are not included.
-
- This emulator focuses on the exact reproduction of special graphical
- effects possible on the 64, and has therefore relatively high system
- requirements. Using a 68060-50 and a CyberVision card gives about
- 140-160% of the original C64 speed in standard text mode in the
- emulation's most precise mode and about 700% in its fastest mode.
-
- Using a line-based VIC model, Frodo is capable of running most games
- and demos correctly, even those with FLI, FLD, DYCP, open top/bottom
- borders, multiplexed sprites etc. A single-cycle version of the
- emulator, "Frodo SC", is included that runs even those programs that
- fail on the line-based emulation.
-
- A graphics card (any one whose modes are selectable with a screenmode
- requester will do) is strongly recommended for faster display as the
- emulator's routines have been designed for a chunky display memory.
-
- Some small demo programs and the full source code in C and assembly
- language are included in the archive.
-
- Changes from V2.0:
- - The C64 character ROM is now included in the archive
- - Fixed write errors in 1541 "Dir" mode
- - 1 bit Amiga mode fixed
- - SID type gadget is localized
- - Reset6526 stops timer B counting underflows of timer A
- - Sprite display can be turned off
- - Corrected VIC interrupt handling, raster interrupts can be
- triggered by writing to $d01a
- - CIA interrupts cannot be cleared by writing to the ICR
- - Better CIA 1 PRA/PRB emulation (keyboard/joysticks)
- - Corrected SAM CIA timer output mode display
- - SAM can be invoked from the "Illegal Opcode" requester
- - 6510 registers can be modified from within SAM
- - The file name for the "o" command in SAM must now be surrounded
- with quotation marks (")
- - Added load and save commands to SAM
- - Frodo SC: SAM "vv" command works
- - Frodo SC: Implemented 3-cycle-delay when starting timers
- - Frodo SC: LPY register reported wrong values
- - Frodo SC: Implemented simple sprite display (no collisions, no
- priorities, sprites are drawn over the border)
- - Frodo SC: Corrected display of background color in left/right border
- area
-