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[/] [a-z80/] [trunk/] [host/] [zxspectrum_de1/] [rom/] - Rev 15

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Rev	Log message	Author	Age	Path
13	Full support for nWAIT during M1 and memory cycles This set of changes fixes issues with nWAIT signal Updated reg control, resets, ir modules to handle delay This correctly delays clearing of IR if the nWAIT was asserted at the very first M1 cycle Simplify decode_state to use discrete write enable for CB/ED flags Gate CB/ED write with hold_clk_wait to enable nWAIT delay genfuse add code to test nWAIT insertion at M1 Add host wait state circuitry from Zilog manual (wait_state.*) Add wait test code to basic fpga/modelsim models Select from 3 options to test wait states: - no wait state inserted (nWAIT=1) - insert a wait state to every M1 cycle - insert a wait state to each memory access cycle zxspectrum: Add custom NMI handler and a function to enter game pokes after pressing the NMI button zxspectrum: Corrected bits 7,5 when reading ULA port 254 zxspectrum: Fix the shift key repeat bug When using additional keys (<,>,?,...) and shift was released before a symbol, it would repeat. This change fixes that by correctly resetting keyboard mask state bitfields. Added new data pins module for Lattice toolset It has been reported that "data_pins.v" does not compile on Lattice toolset and this variation of the code has been proposed and verified by a user. Fixed M1 during reset Memory_ifc module set M1 to inactive (high) during nRESET Exported wait_m1 signal from that module as a testpoint	gdevic	2892d 02h	/a-z80/trunk/host/zxspectrum_de1/rom/
11	zxspectrum improvements: - Added ZX Spectrum ROM mods as described in the blog: http://www.baltazarstudios.com/zx-spectrum-rom-mods This mod allows NMI interrupt to break into a special handler code inside the ROM image and let the user type a POKE address (5 decimal digits) + value (3 decimal digits) to modify a memory location - Changed default joystick pins to Atari style joystick as described in the blog - Added a timing constraints file	gdevic	3117d 04h	/a-z80/trunk/host/zxspectrum_de1/rom/
8	z80: Release 4	gdevic	3163d 15h	/a-z80/trunk/host/zxspectrum_de1/rom/

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