apratt@atari.UUCP (Allan Pratt) (10/06/90)
david@bdt.UUCP (David Beckemeyer) writes: >I know GFA programs don't run on the TT. This is not exactly true. Programs compiled with GFA 2.x will run on the TT if you use the program 24BIT.PRG (included below) in your AUTO folder. What that program does is use the MMU to cause the CPU to ignore the high byte of all addresses. GFA BASIC uses the high bytes of addresses for something, like a type value, and therefore isn't "32-bit clean." 24BIT.PRG lets you run those programs. You should also run with the cache OFF, because the cache uses all 32 bits: $01xxxxxx doesn't appear to be the same address as $02xxxxxx, even though they are after they get through the MMU. 24BIT.PRG must run in your AUTO folder. It has to run before any TSR's that have their "alternative RAM load/alloc" bits set, so alternative RAM is empty. 24BIT gobbles up your alternative RAM, so your system runs as if you don't have any. (If you *really* don't have any, this is a no-op.) You lose access to the VMEbus, too. This is the price you pay to run non-32-bit-clean programs. GFA is working on their problem. GFA BASIC itself doesn't run on a TT, even under 24BIT.PRG. I don't know about programs compiled with other versions of the compiler, or whether the compiler itself runs. In addition to not being 32-bit clean, GFA BASIC uses memory it doesn't own. This means they are very sensitive to having other things in memory (like another process if you're multitasking), and sensitive to the TOS version (because they rely on certain undefined behavior of Malloc.) These practices are Not a Good Thing, and I yelled at them about this when I was in Dusseldorf. 24BIT will run, but complain, if you're not on a TT, if your TT RAM isn't empty, or if anything else is funky. ============================================ Opinions expressed above do not necessarily -- Allan Pratt, Atari Corp. reflect those of Atari Corp. or anyone else. ...ames!atari!apratt begin 644 24bit.arc M&@@R-$))5"Y$3T,```#_!PL``"<5*'5%"<04```,1)X,J=*DB!,J0:@D>>($ MA)$G4D#(H"$D"1474*0<::!`2AD[:>:D>>-&(H@7(*:4@4.G3!LQ9>2`N,$" M1(P<.6!PY$@%39F45$#4F5-F#H@P(&S@@`%I`(@A4*K4O(,FS1@T(-"$,8IT M8@LQ:>@<)4-&3E&C8H:Z``&B9QBQ;<J$<6.4CE:Q=LMPK'H&38LW<LC$!%$F M35^Q8.D8?6/F*(@9,KZ&!<&&Y)D[@,D():IYZ]&28<B:G6.4#,D3<-^VE+.6 MXY0W<4'`D?/FC)PP;8P._6GW#5$0B>N^`1%W+H@YL,O83>/F3$TV:=;P]@F" M3AXX/P$?3Z,G>^.\')<W=PSG#?/5LLV[45S]C8N="GKZ_CF[]NW<1\V"$.'F MC5C(DHDU!AMRN<&"""!@Y@9J"0*V!@C]R=%&&&RPD0<()%5''154U`33&&'L M%AYU2L$P`PQ/1;5944=5^)@,P(6U6&-(5=8<9H$=51=UH95UUEH@)-%8'F_4 M`8(<=;@QHDLU$6GD'6FX>(9RP,$FQF(RM0'83V@`)D<:8A`(PAK,D3'C<7G, MT5(;((QQVQP^S?&>`AQ)D:0;S)VA(7VTV8;;?A-5=%%&1R#('`A.RA1$%50\ M`8(9;[`AF$SU^8D?>`K$I:4<>;0PH1MA3!G7>D+AB5@=48IUWG!Y);74B<>Q MVN5OA1T6(WMAZ&=8A&60P5&H83`'Y&NQ57J?4519A56N/_7W7V2)M4F@<5"Z MB..#89B!'I)NX-D<1X%:A)%&<W(D)*)%'IGD9T#)UN=]&):4:%M!S:799&)8 M.4>3Z8)8TA@DB30I"*;E.6)(.L"70`QK>92O?T`F0<<)7+%Q1QAI.G;&&V_< M*QA2=`QGUL-B98L>4L;BQE$"(#25[TO[`E<&B+N!,%D;AJ$AEE9VT%<'7E4U M9]2A2)EQYX5JOO63O2NW/("STA;8JU!P'*7M8#*6P889Y2J0@`QK0?&S1!2) M2ZC-\A:I**..0BKI8/8>60;)1YT1;$G(V4Q'TTV5@<?,/Q?5=0(S-+QNJRFS M:==;5;[4:\2-37:M41%.6&$>->65=AU\#[!&?W>@:R3/O`U7<[B#:B0SI/HY MV:9QW&KX5N>)=]V$5;0AIRT(5WS9TF>:)8ZL[RV5="C`;<`1Y=1'&!$$"$($ M,4420^3WT^=OW%%2R!R9%0>J^K5:,V-D"SKN$5WW%-/2^B'E1AV.RT2^>&<( M-V89*Z%-7)D)TQF?3_K!F:U@0IPM)8@VXX&27<CSKC\MKB10@TF>7A2@J,UE M3L*3G5AJUBJ^8*56.KO5F<ISGI@818`AI%#>X,`&C&$H+W((SY?&L`9D5>4J M<G/#P/+")N8@#PYO`1.!NH:Z\Q$G#-(QRASJ$#X2O0H&%'O=57X2$H*%)`QA MFAI5RF`\L?A-1AX:VV1"PI'RD$:(/V'="P'H+OO@)F;0D<Z>0$"$HJPA9%73 M3JN&0!(ZT(8-((#"7+36'L*`*HL<F0RPA,66+*2K#4-)C1R7V$3&M0I$4[29 M49Y@!",DR"<EX9:W]"0\CB0+A\Q:T+,J.*`">6AF(?K-)<.020I=+&.[J1@@ M(2-"#-%(20KHT6AB]A$NVNP[U-$48"[TJ5!AS2B)BXMF0F:S,_!J3VT`$A+6 MI\G/<,1ON&&A=[*2/=&]KB134M5Z6$6;.F2Q?RMC&.]\]Q,2P`!%U"2!#&:` M!4@88'!@FV=8ZMG)0I*`!C3HIP%`@()6S0$W2Q/-6<(H%@4NRXIF,,/ZUM,Y M.U"H#E3<'G7J``?LR`2$B)'1X`H'`H^$YE&T81,D"*!/?OJ3H0Z%Z%A\1!H= MS?$.]-1?Y]24OQBD`$@]J6*U`&F6E]H3!C6!&@DZ^4J:R9(ZF/1)YW+9HEW" M*#B^G*,P?P0?1QK)7PRBY1C.0J^6!J$)FYD@22Q$MEZ2;ZRDJ4G>7(=6Q/QD M*`:+3U"D\%;@K4A#5:P=6\[E.M)!:#@<<FL3:J*=-`PI78Y%3EP221<Z4(A` MFDE+R<RBRKB.)RS\.BOL#E<5:#8PFVVA3N(2%"4VA$=K@'2=9?5V3@;%[D.Q MG`XWJZA9Y01-3X>*+&&;`#ESDHXG@RVL:*U76L">E@Z9D^UK:>LB;M4D;KFZ M37.H*):\86H.:5K3?EB7SCD@:'%`&RY7W'`AY18V272(DCE'QC$Z(/4NW<34 M;*PBW-]D<$)R=!T0\]"U.H)DK8L1Z4^L4)"T&,5?C_7K4<8`8<Z85D]SO=!$ M[$HCB>;UFV$!H%Z'X[K*_$:M;*4F#S/'L:F`<K^L3>QKUS(%'^I%`<MQK1O9 MU-?]?/8-(&H)@I!"X2)8F&`?(?!/73@9#-MWLGO2U1PXTI\$N9":]6G)&$IF M-^:H";$QBYM#T^L2[@*R/F+`(EW5$,DVO0DKEN6(ZV*'LNW"=\,=GF.3GVRR MP8AR@D%NHZ6Z!H77VE!9&Z9#'3Y[(2#V%$#1PBM1D)7BQ[JA.[3)2LZ`DX>6 M<&7+"@#B?91CPD(^80JOJ]"%C:.FVEJQ#%4-;E=?U$MF'3`LQ6L/1U!0!A>< MP04IF.,4AC`].C;A>0!;SQ\)Q!KX%/%LD#QS[`[5JD4UZE&1&AAP.;BAH-1Q M#G=\0]6RMK45&85#=2KL;L,2Q3!X-$IRQG6LRF<VU65;++\M`^N$2T<[XK%- MR=$-'"(&S!Z%920&XG?JCD"<.H>AI'*1";>IX^VVA7LP,!GX9TI]W$\JBR-) MR]AHTB`84L5-*T-C#X=:L-P6'/D.4P,K4>BP@S7&!$J_N;;JELH1,Y1)@X@= M3]S,8C19#H=`8M'M.@%%@PIJ23`N$`%\U*=H>`F=XO_.<%;L35ZCB*`R+TUN M=)N`H&CM/-<B4H!_``AT\KKY44?_\Y6["367L.1"2Q<X!T66I*ZU`!)&V/K, MT(`G$%WN.-A!8IZRJ^,ARPVH`]T1?9Q9G7P/K23*Y-2^@\.1&<2@!2/VM2TQ M=L*+8V>:PP&U>]B25&2Y,(.GQ`JYN31J,92Z*!PA'PG7TVH,<ZMKC,4LV1_; MUN76Y.MWGVVK2G2B*(:>F7-QYJCVIH`D*5*'A,&#Y%)<)+Q(?CPD';G<D,-$ M"$>LO&E('EW-T@*NMNKZI@0@P1L%:RD\`:[7YRG9)RI<9'Y9Q!5FD3[:97E+ MY2[GX1AQ01J<%WA-5SKJ8CR7922IQ"`9@A0<0EDQI`"[!4-4-%\D-T%J)UE` M(@)!0%_THS]79BBE(7#,,36>X3:5<0=ST#]K1E1LXE%?XGD@\`7W<7!Q0X2X MX5'0T1GZL1NPAW?@5W['Y%QD]ROTU7QO]5W@MUNN8QHUT26A`TE7`21-@`=' M-@8HD&Q5Y(2%=(9*LVN,D4C^M5C(]!..!TAF$"QL$#,W4R":9Q915%PON''< MI&8+:"F_DB]RH!C(5X>`2#ESAX(E<679Q2>69Q:89VIS!$13TGD':%BFP2)A MP!-3$!'F56Z2!1R504.\Y88M<2]S4%IF8!:/0WL`=DO'X4Y$\3T%6$:.9G(X MY%AYD08R,7,UQT7YUDL[=QSY92VG(19H-TWZIX!59!834E*(-D,/TH`$)!@: MI32A56F_F'NQ$A=@B#9)4R%+DAM:TS-<$5_MD4>-L7=QDQ;),X1%J&X$DSUN M`"1$,!Q0PV=7&(=`%B=4E(%>1BK4=#IE,W'-Y3J9^!.Z0P<78Q8U81JE%9&^ M.&0[PCB0$BFTM4!(V`9X!(*B(Q.[(0?(\HPR<Q195$@,:3Z$$AZ$)V'$^"CV M!A@#M1])TDIS@2`369'%!A\:"#(T0DE4+E!21P```/__`0``117Y8[#-P@(` M``Q@-```$,#%P`!H`$"2P.(-``)"3OW@`0"$DR`&N3P!@:<`*"60`)P92(H! 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