Log message:
Update to 2.3.7
Changelog:
changes from version ?? to 1.1:
* user interface add key = to change the registers
A,B,C,D,E,H,L,IX,IY,A',B',C',D',E',H',L',I,R
* display and update the cycle counter and the refresh register
* BUG in disasm.c f_ld LD rr,(nn) [only 1 byte loaded] fixed!
* BUG in disasm.c f_ex EX (SP),IX break missing ==> runs into EX (SP),IY; \
fixed!
* EI replaced by IFF1 & IFF2 (correct LD A,R & LD A,I)
* user interface @(CPU reset), #(clear memory), *(clear all cpu register),
$(clear tick counter), &(SP init)
* console.c: BUG in c_init() usuage of undefined variable t fixed!
changes from version 1.1 to 1.9:
* IN, OUT, INI, OUTD, ... all implemented
* console.c: BUG(?) in c_init() if ICANON cleared MIN should bet set to 1
* BUG in disasm.c f_add all 16-bit addition with carry bit :( fixed!
* declaration of an assembler label may be appended by a colon
* if PC, SP, and MEMP input is requested current values are displayed in hexa
* HALT really halts the CPU now if interrupt is disabled else set runmode false
* user interface !(NMI) implemented
* user interface . puts compiled instructions into memory and increases addr
* user interface = = to change 16-bit registers BC,DE,HL,BC',DE',HL',IX,IY
* BUG in disasm.c f_adc wrong carry/h/v flag calculation fixed!
* BUG in disasm.c f_sbc wrong carry/h/v flag calculation fixed!
* interrupt behaviour simulated, except IM=0 (probably tick count wrong)
* user interface D(dump/disassemble into file) toggle DI/EI to key ^ changed
* PC and SP defaults into hexa, CALL, JP and RST in disassembling format, too
* user interface " (protocol instructions executed)
* bank switching logic implemented (still experimental)
* BUG in disasm.c f_ld if 16 bit load from 0xffff adress OVERFLOW fixed!
* disasm.c: f_sll opcode CB30-CB37 implemented
* warnings and error_msg now occupy only the very last line (row 23)
* user interface % sets a breakpoint with a run counter at current PC
* breakpoints (address & counter) are displayed in row 22
* pseudo instruction EQU in assembler (asm.c) implemented
* CPU Halt-pin/status is displayed in upper right corner if active
* turbo mode improved a lot: 4 levels now (16 min, 380 sec, 38 sec, 2.5 sec)
* disasm.c: f_nop2 all undocumented ED-opcodes implemented
* all the man pages updated
* turbo mode replaced by controling the clock speed/frequency
* the ports are implemented as a map onto one binary file named .Z80_ports
* hardware_clock.c and lcd_display.c provided as examples for port usage
changes from version 1.9 to 2.0beta:
* BUG in inst-dist.c ED63 ld hl,(nn) A_NUM -> A_PODDLE_NUM fixed!
* z80-asm permits in the case of exactly 1 section and inputfilename ends with
.asm the outputfile to be optional (.asm is exchanged to .z80 for outputfile)
* BUG in z80-asm: if start > highest byte in memory undefined outputfile length
* HALT halts the CPU now if interrupt is enabled else set runmode false
necessary for emulator mode ==> user interface & sets a DI on stack
* user interface ! toggle keyboard read disabled/enabled in run mode
user interface ESC now simulates a NMI
* z80-mon has option -E for emulator mode (immediately CPU start)
* SIGTERM, SIGHUP terminates z80-mon, SIGUSR1 causes reset, SIGUSR2 causes NMI,
SIGABORT causes cpu_wait=1 and SIGTRAP makes a CPU dump
* keyboard mapping implemented (used for IN from port stdin)
* simul.c: decode() now handles stray FD and DD prefixes
* all FD and DD are simulated by decode() ==> IXh,IXl,IYh,IYl introduced in
regs.c and regs_token and set N_REGISTERS to 21 , global _ushort ddfdcb_reg
* decoder and executer [decode() and execute.c] totally checked. Now memory
read access separated from memory write access. Usage of DATA pins!
* in disasm.c: all 11 CB-executions and all 8 arith/logic-A-executions bundled
* BUG in disasm.c: f_cp/f_cpd/f_cpi/f_cpdr/... h-flag wrong calculated fixed!
* BUG in disasm.c: f_dec p-flag wrong calculated fixed!
* the f_... functions in execute.c now return a pointer to char, doesn't print
* total memory access encapsulated in memory.c / io-data access simulated
* Makefile updated (*.h) goes now into hardware, make install added
* doc/man pages updated
* in asm.c: write_to_memory(), set_start_address(), get_current_address()
introduced for usage of compile() [now returns the number of bytes writen]
changes from version 2.0b to 2.0c:
* BUG in asm.c: lexical_analysis: multiple label definition possible fixed!
* BUG in compile.c: c_add: ADD IY,IX valid(typo), ADD IY,IY invalid fixed!
* BUG in execute.c: f_alu: ADD,ADC,SBC use second operand (bad nemonic) fixed!
* BUG in execute.c: f_neg: carry-flag always effected (carry=!!A) fixed!
* BUG in execute.c: f_bit: sign-flag effected only if bit 7 tested fixed!
* BUG in execute.c: f_daa: total nonsense! (>=4 independent errors) fixed!
* z80-asm.c Option -l added ==> in asm.c LISTING in pass 2 evaluated
* in execute.c: in disassembling mode jr and djnz instruction offset with sign
* user interface t enables base switch for disassembling constants
* user interface L now can read true binary files into memory
* user interface a,b changed to u,v and e deleted [reserved for register]
* pseudo instructions DEFM, ALIGN in assembler (asm.c) implemented (sll,too)
* Z80-Asm accepts integers to base 16 also if they have a h or H postfix
* hash table structur/allocation optimized and option -c in z80-asm.c added
changes from version 2.0c to 2.0:
* pseudo instruction END added and max label length to be 63 documented
* in asm.h: better interface (highest_address,generated_bytes,set_compile_pass)
* in asm.c: compile(void) now detects an EOF (take_line reads exactly 1 line)
changes from version 2.0 to 2.1
* in asm.c: compile(char *txt) ==> take_line(..) not longer obligate!
* ticks encapsulated ==> wait_tics(AMOUNT) and quartz.c/quartz.h introduced
* -DEFINES in Makefile and hardware/z80-ctc.c (experimental/beta Z80_CTC)
* BUG in compile.c: IX-/ IY-displacements must be < 128 and >= -128 fixed!
* in asm.c: in compile() all error_messages bundled (do we like to translate?)
* daisy_chain realized / more realistic interrupt handling by hardware
* bank switching logic re-implemented (still all banks must have same size)
* in regs.c register names to upper case (better to distinguish from addresses)
* user interface j switches relative versa absolute address (disasm jr/djnz)
* several small errors/bugs fixed
* user interface j enables now labeled address disassembling for jp/call/jr
* user interface j enables relative disassembling via two-pass disassembling
* z80-mon with -E now reads CPU status from .CPU and finishes if HALT in DI
* algebraic expressions evaluation in asm.c: valid operators ~,&,|,^,+,-,*,/,%
* in asm.c: @ is a special 'label' indicating the current PC
* in asm.c: explicit binary constants must be lead-in by # replacing % prefix
additionaly (to the 0x) the $ prefix for hexadecimal numbers is availible
* BUG in compile.c: c_ret: typo in case PO wrong machine code generated fixed!
* several DJGCC compilation bugs removed (missing includes,defines,typos)
changes from version 2.1c to 2.2:
* BUG in asm.c: convert_arg: memmove deletes IX or IY but needed later fixed!
* BUG in execute.c f_out/f_in: ts[] resp. tf[] must be at least 5 chars fixed!
* BUG in compile.c c_ld: LD HL,(addr) should generate opcode 2A not ED6B fixed!
* BUG in compile.c convert_arg: char consts must not be converted to upper case
fixed!
* BUG in compile.c convert_arg: missing {} for for-loop body which results in
all strings became nilstrings fixed!
* BUG in compile.c convert_arg: bug in string parsing, wrong indices fixed!
* BUG in execute.c f_ld: LD (addr),rr puts only lower byte into memory fixed!
* BUG in asm.c: convert_arg: (IX+-num) num argument was not expected to be an
expression. test_number() <-> parse_expr() \
fixed!
* BUG in asm.c: convert_arg: arg->label undefined! Default to false now fixed!
* BUG in asm.c: lexical_analysis: overflow possible for 8-bit arguments in 1th
pass if labels are used in expressions fixed!
* BUG in asm.c: lexical_analysis: pseudo instructions I_EQU, I_DEFM, I_ORG,
I_ALIGN also needs the current address as
argument in pass 1 if it is a label fixed!
* BUG in asm.c: lexical_analysis: parsing inside '..' was finished by delimiter
(now new error message UNS introduced) fixed!
* BUG in z80-mon.c: main: init_ctc() must be before reset_cpu() because
set_cpu_pin() may call set_ctc_pin()! fixed!
* BUG in execute.c: ix_iy_disp: _ushort a must be casted to signed char fixed!
* BUG in execute.c: reg_str: in case A_PODLE_IX_PLUS, A_PODLE_IY_PLUS argument
arg must be casted to signed char fixed!
* in asm.c: if more than 4 bytes opcodes (e.g. DEFS) only the first 4 are shown
in the assembler listing
* in asm.c: new error message: Invalid character argument for invalid character
tokens containing more than 1 (or none) character
* in all places/files exchanged DEFM <--> DEFS (defs <--> defm). \
Historical
DEFM is used to put messages (strings) in memory and
DEFS is used to reserve storage (in memory) in Zilog Z80 assembler language
changes after version 2.2:
* BUG in instr.c: DEFS and DEFM must stay ordered lexicographicly fixed!
* BUG in asm.c: compile: in printf if i>4 maximum must be 4 not 12 fixed!
* BUG in asm.c: compile: in I_ORG last must be set to address fixed!
* in memory.c: set_default_byte() introduced to set the default memory value
* in z80-asm new option -f XX (this option defines DEFS & ORG gaps to be XX)
* BUG in asm.c: logic when to calculate EQU is wrong!! we need to store the
expression in the hash table NOT FIXED! "(pruchod != 11)"
* BUG in asm.c: the ALIGN statement must produce fill bytes, too (-f XX) fixed!
* BUG in asm.c: overwriting code warning must depend on fill byte fixed!
* BUG in asm.c: test_number: if base is known (prefix) number may be start
with non-digit character fixed!
* BUG in asm.c: compile I_ALIGN address is already increased by out() fixed!
* BUG in z80-asm.c: init: now it has parameter fill_byte to init memory fixed!
* in asm.c/expression.c/hash.c: new evaluation logic for EQU and expressions
implemented. Their values are now evaluated in pass 2 recursivly
* in z80-mon.c: ask() and ask_x() accept now all number representations like
z80-asm (even the '?') except that any sign is forbidden
* pseudo instructions DEFL in assembler (asm.c) implemented
* BUG in z80-asm.c: parse_arg: ignores filename parameter if one can be
constructed from source filename fixed!
* BUG in compile.c: out() should be performed to have correct PC if signed or
unsigned overflow of 8-bit argument occurs.(ret=8,9) fixed!
* in expression.c: new operators !, <<, >>, ==, !=, >, <, \
>=, <=, &&, ||
* BUG in hash.c: last_label_reusable: uniq must be negated fixed!
* in asm.c: DEFL lables now multiple in hashtable (distinguished by lineno)
* in asm.c: COND/ENDC enables conditionel compiling
* BUG in execute.c: f_in_block, f_out_block: F_sign, F_Z not effected and
if B!=0 F_Z not cleared fixed!
* BUG in Makefile: now manuals are in doc/man not in doc fixed!
* BUG in asm.c: convert_arg: indirect addressing was wrongly recognized fixed!
* BUG in hash.c: is_in_table: for non-uniq lables (DEFL) wrong element fixed!
* BUG in hash.c: add_to_table: ->uniq undefined fixed!
* in expression.c: new operators ** , // , ? and right operand of << and \
>>
is now interpreted as unsigned
* BUG in expression,c: parse_expr(): all expressions must be tried to be
evaluated in PASS 1 (needed for ORG, DEFS, CONDC) fixed!
* in ports.c: cpu_pin iorq used, and the variables ADDRESS and DATA are set.
* in hardware/README: explanation how to implement further add-ons
* z80-mon.c: main: cpu_pins busrq and busack are now served
* z80-cpu.c/ports,c: Z80-CTC port access now wired at Z80-CPU
* BUG in ports.c: in_byte(): missing DATA bus assign from *data fixed!
changes after version 2.3:
* BUG in Makefile: DEFINES are not put to in $(MAKE) hardware fixed!
* hardware: logic_analzyer implemented (to view the Z80 pins)
* in decode.c: refresh_cycle() mreq- and rfsh-pin used and I<<8|R onto \
ADDRESS
* in z80-cpu.c: machine cycle counter (triggered by wait_tics)
* BUG in asm.c: no_para[]: RST needs 1 Parameter, not 0 fixed!
* BUG in execute.c: cp_block: 3 tics missing fixed!
* in z80-mon.c: machine cycle counter displayed
* in z80-cpu.c: busrq is now acknowledged at beginning of each machine cycle
* with dummy.c print_ticks() reintroduced to mask it in non z80-mon programs
using acknowledge_bus_request()
* BUG in hardware/z80-ctc.c: read_word(): fp may be 0 fixed!!
* only if !cpu_is_in_disassemble then set_cpu_pin() , acknowledge_bus_request()
and ADDRESS are used (databus can be used if cpu_is_in_disassemble mode)
* port_buffer for OLD_STYLE port_access via Z80_PORTS put in hardware now
* z80-global im Makefile als dependence of z80-cpu.h
* SSL_ZDS trigger in hardware
* BUG in execute.c: f_inc/f_dec: 16 bit registers shouldn't change flags fixed!
* BUG in execute.c: f_rrd: lower nibble in accu set wrongly fixed!
* BUG in execute.c: f_adc16/f_sbc16: zero_flag wrongly calculated fixed!
* BUG in execute.c: f_inc/f_dec: PV_flag wrongly calculated fixed!
* in z80-asm.c und z80-mon.c option parsing simplified und equaly processed.
* BUG in execute.c: add,adc,sub,sbc,cp,f_adc16,f_sbc16: underflow check for
< -127 , < -32767 missing (V-Flag wrongly computed) \
fixed!
* BUG ins asm.c: convert_arg(): arg->text isn't initialized to 0. fixed!
* BUG in regs.h: missing #include "z80-global" to define seznam_type \
fixed!
* BUG in execute.c: f_neg: PV_flag wrongly calculated fixed!
* BUG in execute.c: f_neg: H_flag setiing typo: F_N must be F_NH fixed!
* BUG in execute.c: f_inc/f_dec: PV_flag wrongly calculated for 8-bit register
(last fix affected only 8-bit memory access) fixed!
* BUG in execute.c: add/adc/sub/sbc/cp/adc16/sbc16: V_flag inverted mapped on
P_flag fixed!
* in all Makefile: -malign-function=0 replaced by -falign-function=0 and
Makefile-Variable CC set to gcc.
* doc/execute_timing.tex to doc/execute_timing.txt renamed
* BUG in z80-mon.c: main: counter b & s for argv wrongly increased fixed!
* BUG in memory.c: init_banks: map must be 0-pointer for first realloc fixed!
* BUG in memory.c: init_banks: tok[3] must be tok[4] in two lines fixed!
* BUG in memory.c: init_banks: superfluious else prohibited bank[id].back_up
allocation. fixed!
* BUG in memory.c: init_banks: strtoul(..) needs check of *p if p is defined
after scanning tok2 and tok4 for numbers fixed!
* BUG in memory.c: _uchar memory_at: logic for bank_access is missing fixed!
* in hardware/banks-*: new bank-mask notation introduced
* in doc/man/z80-banks.5 default bank after reset/initialisation documentated.
* in memory.c bank-mask must now be a 2 hexadecimal number
* in doc/man/z80-mon.1 execution-mode preciser defined.
* in z80-cpu.c/z80-cpu.h: new cpu-flag cpu_is_in_x_mode defined
* in z80-mon.c: main: cpu_is_in_x_mode is set if 'Execute instruction'-Key
* in execute.c: cpu_is_in_x_mode used for jr/djnz/halt/cp-, ld-, out-, in-
block instructions used
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