TANDY 200 ROM Call Information The following information is based on preliminary information received from Radio Shack. It has not been verified. 1. All TANDY 200 calls have the same entry and exit conditions as the same call in the Model 100. Any deviations from this are shown. NAME 100 200 ------------------------------------ ---LCD FUNCTIONS--- LCD 4B44 503C (or RST 4 ) (or RST 4 ) SETCUR 7440 8D6A PLOT 744C 8D76 UNPLOT 744D 8D77 POSIT 427C 4F9B ESCA 4270 4F8F CRLF 4222 4F3E HOME 422D 4F3E CLS 4231 4F4D SETSYS 4235 4F54 RSTSYS 423A 4F59 LOCK 423F 4F5E UNLOCK 4244 4F63 CURSON 4249 4F68 CUROFF 424E 4F6D DELLIN 4253 4F72 INSLIN 4258 4F77 ERAEOL 425D 4F7C ENTREV 4269 4F88 EXTREV 426E 4F8D ---KEYBOARD--- KYREAD 724H 8B03 CHGET 12CB 12F7 CHSNS 12DB 1404 KEYX 7270 8B31 BRKCHK 7283 8B4D INLIN 4644 54F6 STFNK 5A7C 6E20 CLRFNK 5A79 6E1D DSPFNK 42A8 4FC7 STDSPF 42A5 4FC4 ERAFNK 428A 4FA9 FNKSB 5A9E 6E42 ---PRINT ROUTINES--- PRINTR 6D3F 84C9 CHPLPT 1470 1590 PRTTAB 4B55 5A14 PRTLCD 1E5E 2946 ---RS232 & Modem--- DISC 52BB 61BA CONN 52D0 61D0 DIAL 532D 622B RCVX 6D6D 8508 RV232C 6D7E 8519 SENSCQ 6E0B 8608 SENDCS 6E1E 8617 SD232C 6E32 8643 CARDET 6EEF 874A SNDCOM 6E3A 8629 BAUDST 6E75 86AD INZCOM 6EA6 86DE FOR 200: Bit Desc --- ---- 0-1 Baud Rate:00=none, 10=x1,01=x16(fix),11=x64 2-3 Word length: 00=5, 10=6, 01=7, 11=8 4 Parity: 0=Disable, 1=Enable 5 Parity Set: 0=Odd, 1=Even 6-7 Stop Bits: 00=None, 10=1, 01=1.5, 11=2 Text string containing current STAT located at EF3C (7 bytes) ----------------------- SETSER 17E6 191D CLSCOM 6ECB 87B5 ---CASSETTE ROUTINES--- CTON 14A8 15C0 CTOFF 14AA 15C2 CASIN 14B0 15C8 CSOUT 14C1 15D9 SYNCW 6F46 87D1 SYNCR 6F85 8810 DATAW 6F5B 87E6 DATAR 702A 88B3 ---RAM FILE ROUTINES--- MAKTXT 220F 2D7C CHKDC 5AA9 6E4D GTXTTB 5AE3 6E8C KILASC 1FBE 2AB5 INSCHR 6B61 829C MAKHOL 6B6D 82A8 MASDEL 6B9F 82DA ---MISC ROUTINES--- INITIO 6CD6 841C IOINIT 6CE0 8439 MENU 5797 67A4 MUSIC 72C5 8BC0 TIME 190F 1A7E DATE 192F 1A9E DAY 1962 1AC5 ---MISC INFO--- CURSOR ROW POSN EF06 CURSOR COLUMN POSN EF07 START OF LCD MEMORY FA30 END OF LCD MEMORY FCAF DIRECTORY TABLE F252 -------------------------------------- Through peeking and poking around in the 200, the following locations have been "doped-out": POWER-OFF TIME EF38 FULL/HALF DUPLEX (255=FULL) EF39 ECHO TO LP EF3A IGNORE LF F65A(M100) EF3B CURRENT LCD X POS EF0E CURRENT LCD Y POS EF0D DISPLAY FN KEY FLAG EF0A SCREEN LOCK FLAG EF0B REVERSE LCD DISPLAY FLAG EF15