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+3 BASIC and RST 8I've been working on adding commands to the BASIC interpreter, in a similar style to how Interface 1 does it (catch the RST 8 error trap). This works…
... it (catch the RST 8 error trap). This works perfectly on a ... -
INPUT LINE and STOP in INPUTWhat was the reason for the ROM Editor routine causing "down arrow" while in an INPUT LINE to cause the "H STOP in INPUT" error report? Why doesn't i…
... the "H STOP in INPUT" error report? Why doesn't it ... I had to change the error trap to copy the Input buffer ... [b]not[/b] give an error. There's a certain degree ... -
Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…
... command in conjunction with an error trap routine, I can switch from ... -
that "listing variables during runtime" thingWell, I did eventually finish this, but with my meds playing up I don't have much time each day that I can spend at the computer, so it's taken rathe…
... .)
* The BREAK trap is enabled by enabling MCTRAP ... a STOP (or any other error report) - other than ...
Part the 2nd - the error trap routine assembler listing:
[url ... NOTES:
; Fixes ROM stacking error
; Handles regular characters, ... -
analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …
... can trap the error (the program in question already has an error trap routine ... . If it still returns with error 2 then the variable is ... variable, then, after leaving the error trap, it will be slotted in ... referenced will not generate an error and so won't get ... -
+3 BASIC and RST 8I've been working on adding commands to the BASIC interpreter, in a similar style to how Interface 1 does it (catch the RST 8 error trap). This works…
... , it is used for the error handling.
It seems ... is:
error trap RST 8
preserve error states
test ... for new commands
set error state to zero if found ... , else restore error states
set ROM 1 ... -
Tape I/O in z88dkAccording to the documentation, z88dk appears to have facilities in its spectrum-specific library for tape i/o - [url]http://www.z88dk.org/wiki/doku.…
... anyway). Also, it installs an error trap to intercept if someone presses ... return non-zero to indicate error.
** int tape_load_block ... -
Problem with PRINT #stream on +128kWorking on a +128k, I want to choose whether all report output goes to screen or printer, so I use PRINT #stream where stream = 2 or 3 for screen or …
... then I put in an error trap routine so that I could ... to the printing from the error trap in the program I get ... the "8 End of file" error every time. The only way ... -
Found an old tapeWay back in the 80's I wrote some basic (and later compiled basic) programs to hold character data for playing the fighting fantasy books. I tried fl…
... did a pass for error checking, tightening up the ... SUB 9300: IF error THEN LET error=0: GO TO ... 9300 IF z$="" THEN LET error=1: RETURN
9310 ... z$(f)"9" THEN LET error=1: RETURN
... number, including a primitive on error trap, there - at least checking ... -
Adventure Gamebook Solver"It would take me ages to solve that adventure gamebook without AGES" - is what someone might say if they didn't have the [url=http://www.users.globa…
... /> Also:
* Fixed an error in the error trap setup, in that the ... of locations, so any subsequent error report or STOP would cause ... +2A/+3-in-128k mode error handling.
* Speeded up the ... -
Saving and Loading from tape in MC?I'm actually having problems with saving and loading from the ROM routines for the interpreter... I'm currently using the following codes for saving…
...
9100 REM *** SET UP ERROR TRAP
9112 LET errsp=23613 ... />
9123 REM *** REMOVE ERROR TRAP
9124 IF errsp THEN ... [/code]
If the error trap is called then the standard ... BASIC routine should reset the error trap each time it's ... -
Saving and Loading from tape in MC?I'm actually having problems with saving and loading from the ROM routines for the interpreter... I'm currently using the following codes for saving…
... An example of an alternative error handler routine which jumps to ... .
[QUOTE]The trap should be removed before finishing ... STOP message will call the error trap routine and send you back ... t know how modern emulators trap their saving routines (or ... -
Alkatraz protection systemI recently became interested in the Alkatraz protection system, a very widely used tape protection (a infoseek search returns more than one hundred r…
... \utils\wavscan21a.c 203 Compiler error (trap). Stopping c
ompilation
1 error"
LCC was very ... -
Decimals!Quick couple of (probably very silly) questions, folks... If I have an input command in a program asking "How many potatoes do you want to buy from …
... />
If you want to error trap the INPUT you'll have ... -
Decimals!Quick couple of (probably very silly) questions, folks... If I have an input command in a program asking "How many potatoes do you want to buy from …
[QUOTE=aowen;622706]INPUT a
LET a = INT(a)
If you want to error trap the INPUT you'll have to write your own INPUT routine.
Oh and LET p=INT(p/2)[/QUOTE]
Aha! Excellent! Many thanks, Andrew. :smile: -
Decimals!Quick couple of (probably very silly) questions, folks... If I have an input command in a program asking "How many potatoes do you want to buy from …
... & statement causing the error. POKE the stack address pointed ... just loop indefinitely as the error will persist, but external ... />
A more comprehensive error trap is easily handled by saving ... begins immediately after the error return address on the ... -
SUPER INPUTA couple days ago I searched for an "INPUT string" routine that I could use in Assembly programs and supported multiple lines, but I found none. Thus…
... INPUT in my general error trap routine addressed via (ERR_SP ... A,(23610) ;save ERR_NR error code
LD (23681 ... LD (23610),A ;reset error code
LD HL ... 9000 ;line number of error handler
ld ... -
Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…
... it. For another thing, my error trap is getting lost somehow on ... -
Switching 48/128 modes within a BASIC programI'm not sure what use this would be; ie. being able to switch between 48k and 128k modes and back again from within a continuously running BASIC prog…
... , but ModeSwap includes a bonus error trap routine which can be used ... /> RETURN
REM Reset Standard Error Trap to Match Mode/Model
RETURN
REM Standard Error Trap Addresses by Mode/Model
need a new method for m/c parameter assignmentI've been using a variable length function of the form: "FN a$(a$,a[,b...,z])=STR$ USR md" to search a data table and return a string result. By putt…
... that I'd have to trap an error exit from the "Scanning ... to have to intercept the error handler then I may as ... commands to force a syntax error which pages in the Shadow ... . They both go to the error trap because, in the first instance ...Break into programIs there any way of stopping people using the break option in my software productions so they can list the code.
Here's the smallest comprehensive error trap for the models shown. ... The 'sp' POKEs change the error return in ((ERR_SP)) to 23601 ... be handled differently because the error handler does an extra + ... The 'sp' POKEs change the error return in ((ERR_SP)) to 23601 ...Break into programIs there any way of stopping people using the break option in my software productions so they can list the code.
... LD A,(23610) ;save ERR_NR error code
LD (?????),A ... LD (23610),A ;reset error code
LD HL ... ;line number of BASIC error handler
ld ... />
* If the error trap is triggered while in a ...Did your school use any of the Sinclair Educational / Science softwareBack in the day there was a range of Educational and Science Horizons packages published by Sinclair / MacMillan and others Was having a look at som…
... Input, and how you could error trap keystrokes for valid responses and ...Spectranet and DivIDE 2k14This is a bit of an odd one - a customer purchased a Spectranet from me, and found that after an hours usage on his Spectrum +2A, he could no longer …
... added to set the downstream trap inhibiting hardware) then presumably bus ... occurring whenever a tape or error trap occured. Was there a diagnosis ...BREAK key on 128k SpectrumWhat happens when BREAK is pressed on a 128k Spectrum? Why is it different from what happens on a 48k Spectrum. Is there a way to disable it or to …
...
A more comprehensive error trap is easily handled by saving ... code]
REM ENABLE ERROR TRAP
REM olderr=any ... RETURN
REM DISABLE ERROR TRAP
9120 LET sp ... 's the smallest comprehensive error trap for the models shown. ...
