Am 06.07.21 um 15:07 schrieb Graeme Gregory via Ql-Users:
On Tue, 6 Jul 2021, at 1:59 PM, desin via Ql-Users wrote:
I agree with Francois, using LOOKUP% as alternative for EXISTS.
I use it a lot. It returns the place in the name table which can also be
used to test for conflicting keywords if found out of place.
Bob
on QDOS
Lookup% can not distinguish between
SCR_XLIM and SCRXLIM
http://www.dilwyn.me.uk/tk/scrxlim.zip
if SCRXLIM_cde is loaded
print Lookup% ("SCR_XLIM") gives 160
print Lookup% ("SCRXLIM") gives 162
conclusion
QDOS -> EXISTS_bin
SMSQE -> Function_code
That looks right to me, assuming uQLx based code.
Lookup%(SCR_YLIM) will give 161 (its the last extension installed by uQLx), and
SCRXLIM is the first user one at 162.
Graeme
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On the other hand; would it be safe to presume; for all Systems;
if SCR_XLIM is not present; the default screen resolution is used ?
my reason is a simple system info
depends on
Exists_bin
scrxlim_cde
CLS
PRINT
IF EXISTS ("EMU_VER$") : PRINT " SMSQmulator"
IF EXISTS ("QPC_EXIT") : PRINT " QPC2 "&QPC_ver$
IF EXISTS ("UQLX_RELEASE$"): PRINT " UQLX "&UQLX_RELEASE$
smsqe% = 0 : min% = 0 : tk% = 0
IF "HBA" INSTR VER$ : smsqe% = 1
IF "JSL1" INSTR VER$ : min% = 1
IF EXISTS ("ED") : tk% = 1
IF smsqe% : PRINT " SMSQE " &VER$ (1)
IF min% : PRINT " Minerva ROM "&VER$ (1)
IF NOT min% AND NOT smsqe% : PRINT " ";VER$ &" ROM"
fr_mem%=FREE_MEM/1024
IF fr_mem% > 1024:PRINT " "&FDEC$ (fr_mem%/1000,4,1) &" Mb free"
if fr_mem% <= 1024:PRINT " "&fr_mem%&" Kb free"
if tk% and not smsqe% : PRINT " Toolkit2 enabled"
IF EXISTS ("HIS_USE") and not smsqe% : PRINT " History enabled"
IF exists ("PINFO") and not smsqe% : PRINT " Pointer enabled"
IF EXISTS ("RAM_USE") and not smsqe% : PRINT " Ramdisk enabled"
xx%=512:yy%=256
IF EXISTS ("SCR_XLIM"):xx%=SCR_XLIM :yy%=SCR_YLIM
IF EXISTS ("SCRXLIM") :xx%=SCRXLIM(0):yy%=SCRYLIM(0)
PRINT " Screen "&xx%&"x"&yy%
Markus
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