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automatic relocating of non-relocatable codeI was pondering upon the problem of changing absolute addresses used by CALL, JP, etc. when code is moved, without reassembling at the new location; …
...
FPTOBC: equ $2dA2 ;from calculator stack: BC
STACK ... ,hl ;undo USR
GETARG: rst $20
call SCANNG
rst $18
cp ","
jr ... -
checking bits in BASICThe question of manipulating bit patterns in BASIC was raised recently in this [thread=35728]Keys redefine routine and key check[/thread] thread. I s…
... =roko;563447]
[CODE]
RST 48 ;MAKE_ROOM 00048
[/CODE ... /want using the Spectrum stack-calculator to make room, so I ... -
IN or INKEY ?just curious which is better to use.. I have a menu done.. and use 6/7 to go up down it + space to cycle thru the options (using inkey).. obv. if I w…
...
FPTOA: equ $2dd5 ;from calculator stack: A
... step over +VAL"
rst $20
rst $20
call SCANNG ... push af ;save operator
rst $20 ;step over operator
AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…
... /> FPTOBC: equ $2da2 ;from calculator stack: BC
FPTOA: equ ... />
rst $20 ;step over +
rst $20 ;step over ... push af
rst $20 ;step over operator
Arkanoid - Hit Squad ReleaseInfoseek (and the [URL="ftp://ftp.worldofspectrum.org/pub/sinclair/games/a/Arkanoid(TheHitSquad).tzx.zip"]TZX[/URL] itself) identifies the Hit Squad …
... jr z, l_e527 ; e523 28 02
jr l_e51c ; ... jr z, l_e53f ; e53b 28 02
jr l_e531 ; ... z, l_e54f ; e54c 28 01
rst $00 ; e54e c7< ... ; e562 d3 7f
rst $00 ; e564 c7
... jr z, l_e598 ; e594 28 02
jr l_e589 ; ...Procrustean PrintingHere's a short routine to manage printing of text with command tokens, to avoid messing up the screen when they are expanded. It just prints as many …
... correct number were on the calculator stack. (That slightly ... ld ix,0
GETARG: rst $20
call SCANNG< ... br /> inc ix
rst $18
cp ","
calculator stack" method of passing ...Procrustean PrintingHere's a short routine to manage printing of text with command tokens, to avoid messing up the screen when they are expanded. It just prints as many …
... correct number were on the calculator stack. (That slightly ... ld ix,0
GETARG: rst $20
call SCANNG< ... br /> inc ix
rst $18
cp ","
calculator stack" method of passing ...Tool for saving prog op codes in one neat column?[deleted]
... ,(IY+1)
28B6 DF RST 18
28B7 CD8D2C CALL ... C,A
28C1 E7 RST 20
28C2 E5 PUSH ... HL
28C3 FE28 CP 28
28C5 2828 JR Z ...Is there a ROM modification (48K) for load without typing LOAD""?The target is to play with 48K machines with keyboard broken, or an alternative solution for new clones like Superfo instead of making a new keyboard…
... />
;; SA-SPACE
L0621: RST 30H ; BC-SPACES creates 17 ... filename
; parameters from the calculator stack.
; length of string ...Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…
...
jr z, l_82e4 ; 82d4 28 0e $0c/$07ts
inc ...
jr z, l_82e4 ; 82d9 28 09 $0c/$07ts
inc ...
jr z, l_82e4 ; 82de 28 04 $0c/$07ts
call ... cd 00 07 $11ts
rst $00 ; 82e3 c7 $0bts
Need to scroll one column using m.c.I've used many of the available routines to scroll the entire screen in any direction, but I'm not being able to find one that would allow me to scro…
... attributes
bit 0,(ix+28) ;copy attributes?
jr z ...
ret c
ERRORQ: rst $08 ;ERROR_1
defb $19 ...40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…
... 28
defb 0,28,34,28,34,34,34,28
defb 0,28 ... />
;*********************************************************************************
; the RST $10 replacement routine
; accepts ... the printroutine to replace RST 10/be used in basic ...smooth movement in basicWas trying to figure this out myself but i would like to be pointed in right direction now :-). How do I make something move in Basic without gettin…
... copying them to the calculator stack, but that ... a,$10 ;INK
rst $10
xor a ... ;0
rst $10
ld a ... 90 ;UDG A
rst $10
pop hl ...Newbie says 'Alreet?'Hiya dudes, Just dropping a line to say hello as i've decided at 33 to try and fulfill a long time ambition to write a speccy game in machine code..…
... means I can eliminate all RST 16 nonsense from my game ... /> 27 add a,$08
28 ld h,a
29 ...Machine code RST10 problemHello! After 27 years of playing with Spectrums I'm starting to look into doing assembly language properly. All went swimmingly well until I wrote …
... the E_LINE or WORKSP or calculator areas (STKBOT->STKEND), as ... channel information area and then RST $10 would stop working ... which ...Machine code RST10 problemHello! After 27 years of playing with Spectrums I'm starting to look into doing assembly language properly. All went swimmingly well until I wrote …
... the E_LINE or WORKSP or calculator areas (STKBOT->STKEND), as ... channel information area and then RST $10 would stop working ... which ...calculator and sinusok, look at the Sysel's routine: [PHP]3 5b00 *s 4 5b00 tabsin = #7000 03 mksin 19.11.1995 Busy soft …
... , the 'last value' on the calculator stack. The print format never ... , x is deleted from the calculator stack, a '0' is printed ... />
2DE3 PRINT-FP RST 0028,FP-CALC Use the calculator[/QUOTE]Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... estimated 15
.one_pulse_max:equ 28
;; (all the minimums ... was a tape error
rst 8 ; error restart
defb ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... /> org 0x0007
rom0_entry:
rst start ; jump back to start ... " ; version number
; THE 'CALCULATOR' RESTART
org 0x0028
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... /> org 0x0374
sound_4:
rst next_char ; advance pointer
org 0x0397
sound_1:
rst get_char ; get next character
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... br /> call expt_exp ; parameter to calculator stack
call syntax_z ; ... call use_zero ; put zero on calculator stack
jr sa_code_2 ; ... rst next_char ; get next character
call expt_1num ; number to calculator stack ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... fetch_two ; get two numbers from calculator stack
call shift_fp ; shift ... br /> call int_store ; result to calculator stack
pop de ; stack ... /> org 0x31ad
report_6:
rst error ; report
defb Number_too_large ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... fetch_two ; get two numbers from calculator stack
exx ; alternate register ... /> org 0x32de
oct_to_dec_1:
rst next_char ; get next character
org 0x3307
hex_to_dec_1:
rst next_char ; get next character
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... next_2num ; co-ords to calculator stack
; rst get_char ; get current ... /> fce ; exit calculator
call fp_to_bc ; calculator stack to BC
fce ; exit calculator
inc (hl) ; increment exponent ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... call slicing ; change parameters
rst next_char ; next character
... fwait ; perform
fsgl ; calculator
fce ; operation
jr ... ; stack present values
rst next_char ; next character
...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... call stk_sto_str ; store on calculator stack
rst get_char ; get current character ... pointer
fwait ; enter calculator
fdel ; reduce stack ... five
fce ; exit calculator
pop hl ; unstack ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... /> inc de ; next position in calculator stack
ldir ; copy literals ... /> inc de ; next position in calculator stack
jr stk_zeros ; loop ... /> org 0x3535
report_a:
rst error ; error
defb Bad_argument ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... rst bc_spaces ; make space
call stk_sto_str ; parameters to calculator stack ... ; zero
fce ; exit calculator
ret ; end of function ... ; exit calculator
org 0x3760
report_ab:
rst error ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... x
fce ; exit calculator
ret ; end of ... x
fce ; exit calculator
ret ; end ... last:
fce ; exit calculator
ret ; end of ... ; make four
rst bc_spaces ; spaces
pop ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... org 0x1bec
report_n:
rst error ; else
defb Missing_statement ... org 0x1c2e
report_2:
rst error ; else
defb Undefined_variable ... stack zero
fce ; exit calculator
ret ; end of subroutine ...
