AmendHub

--- PAP.c Tue Feb 17 09:58:06 2026 +++ PAP.c Mon Feb 23 10:27:55 2026 @@ -5,7 +5,7 @@ * as described in Inside AppleTalk, Second Edition, 1990. * * Written by: Ken McLeod, 2026-01-07 - * Last update: 2026-02-16 + * Last update: 2026-02-23 * * This software is provided as-is, with no warranties expressed or implied, * under the terms of the BSD 2-Clause License. See separate "LICENSE" file. @@ -42,6 +42,7 @@ int SendRequest(char connID, char funcID); int SendResponse(char connID, char funcID); int SetUpRequestData(char funcID, Ptr reqBuf); int SetUpResponseData(char funcID, Ptr respBuf); +void FilterData(long *count, void *data); void SendTickle(void); void StartTickling(void); void StopTickling(void); @@ -94,6 +95,7 @@ long int gDataLen; /* total data received on current c int gPrinterType; /* {0..3}, see kPrinterType definitions */ Boolean gColorRibbon; Boolean gSheetFeeder; +Boolean gIW1Mode; Boolean gFinishedQuery = false; Handle gQueryHdl = nil; /* query sent to us by the LW driver */ int gQueryLength; /* length of query */ @@ -137,16 +139,18 @@ char *PAPFunctionNames[] = { "Status", /* 9 */ }; -void SetPrinterOptions(Boolean hasColorRibbon, Boolean hasSheetFeeder) +void SetPrinterOptions(Boolean colorRibbon, Boolean sheetFeeder, Boolean iw1Mode) { - gColorRibbon = hasColorRibbon; - gSheetFeeder = hasSheetFeeder; + gColorRibbon = colorRibbon; + gSheetFeeder = sheetFeeder; + gIW1Mode = iw1Mode; } -void GetPrinterOptions(Boolean *hasColorRibbon, Boolean *hasSheetFeeder) +void GetPrinterOptions(Boolean *colorRibbon, Boolean *sheetFeeder, Boolean *iw1Mode) { - if (hasColorRibbon) { *hasColorRibbon = gColorRibbon; } - if (hasSheetFeeder) { *hasSheetFeeder = gSheetFeeder; } + if (colorRibbon) { *colorRibbon = gColorRibbon; } + if (sheetFeeder) { *sheetFeeder = gSheetFeeder; } + if (iw1Mode) { *iw1Mode = gIW1Mode; } } int GetActiveClientConnections(void) @@ -773,6 +777,7 @@ void HandleResponse_from_ATPRequest(void) eofByte = 0; /* clear so we ask for more data */ } else { + FilterData(&length,data); /* can modify length */ WriteDataToSpoolFile(length,data); gDataLen += length; if (++gDataSeq == 0) { @@ -1180,6 +1185,37 @@ int SetUpResponseData(char funcID, Ptr respBuf) } } return dataLen; +} + +void FilterData(long *count, void *data) +{ + /* The AppleTalk ImageWriter driver assumes it is formatting output + * for the ImageWriter II. Some of the printer control sequences + * it can emit are not understood by an ImageWriter I. We can filter + * these out so the unused parameters of the commands are not printed. + * Currently, we strip the following IW II-only sequences: + * 1B48xxxxxxxx (page size command, plus 4 bytes) + * 1B4Bxx (set color command, plus 1 byte) + */ + char *p; + long length, index; + if (!gIW1Mode) { return; } /* only filter in IW1 compatibility mode */ + + p = (char*)data; + length = *count; + for (index=0; index<length; index++) { + if (p[index] != 0x1B) { continue; } + if ((length>(index+6)) && (p[index+1] == 0x48)) { + BlockMove(&p[index+6],&p[index],(length-index)-6); + length -= 6; + index -= 1; + } else if ((length>(index+3)) && (p[index+1] == 0x4B)) { + BlockMove(&p[index+3],&p[index],(length-index)-3); + length -= 3; + index -= 1; + } + } + *count = length; } void SendTickle(void) --- PAP.h Sun Feb 1 00:41:01 2026 +++ PAP.h Mon Feb 23 00:10:10 2026 @@ -3,7 +3,7 @@ * C Interface to PAP (Printer Access Protocol) routines * * Written by: Ken McLeod, 2026-01-07 - * Last update: 2026-01-28 + * Last update: 2026-02-22 * * This software is provided as-is, with no warranties expressed or implied, * under the terms of the BSD 2-Clause License. See separate "LICENSE" file. @@ -43,10 +43,10 @@ extern "C" { void CheckATP(void); /* call this prior to SLInit to specify emulated printer options */ -void SetPrinterOptions(Boolean hasColorRibbon, Boolean hasSheetFeeder); +void SetPrinterOptions(Boolean colorRibbon, Boolean sheetFeeder, Boolean iw1Mode); /* accessor for options */ -void GetPrinterOptions(Boolean *hasColorRibbon, Boolean *hasSheetFeeder); +void GetPrinterOptions(Boolean *colorRibbon, Boolean *sheetFeeder, Boolean *iw1Mode); /* number of active connections (i.e. not idle) */ int GetActiveClientConnections(void); --- README Tue Feb 17 09:53:04 2026 +++ README Mon Feb 23 11:11:53 2026 @@ -1,4 +1,4 @@ -## Simple Spooler 0.1 ## +## Simple Spooler 0.2 ## Copyright (c) 2026, Ken McLeod. This application acts as a virtual printer on an AppleTalk network, receiving @@ -37,7 +37,9 @@ A dialog will present the following options: Select one of the icons representing LaserWriter, ImageWriter LQ, or ImageWriter to create a virtual printer of that type. For an ImageWriter or LQ, you can additionally select whether the printer is seen as having a - color ribbon or a sheet feeder. + color ribbon or a sheet feeder. The "ImageWriter 1 mode" checkbox improves + compatibility with the original ImageWriter by removing newer printer + control codes that only the ImageWriter II understands. * Print to this port Select the icon for the local serial port where your ImageWriter printer @@ -200,3 +202,4 @@ to reproduce it.) Thanks! **Modification history** 0.1 2026-02-16: first release for testing +0.2 2026-02-23: added ImageWriter 1 compatibility mode --- Spooler.c Mon Feb 16 21:55:58 2026 +++ Spooler.c Mon Feb 23 10:10:14 2026 @@ -10,7 +10,7 @@ * file is present in the spool directory. * * Written by: Ken McLeod, 2026-01-07 - * Last update: 2026-01-31 + * Last update: 2026-02-23 * * Some code was adapted from the Neighborhood Watch sample application * by Ricardo Batista, found on Apple Developer CD Volume IX, and from the @@ -76,10 +76,11 @@ #define printerPortItem 11 #define colorRibbonCBoxItem 13 #define sheetFeederCBoxItem 14 -#define printingEnabledItem 15 -#define scheduleUserItem 16 -#define printerTypeUserItem 17 -#define localPortUserItem 18 +#define iw1ModeCBoxItem 15 +#define printingEnabledItem 16 +#define scheduleUserItem 17 +#define printerTypeUserItem 18 +#define localPortUserItem 19 #define logWindowID 128 #define spoolerDialogID 128 @@ -129,6 +130,7 @@ short defaultPortItem = modemPortItem; Boolean defaultColorRibbon = false; Boolean defaultSheetFeeder = false; Boolean defaultPrintEnabled = true; +Boolean defaultIW1Mode = false; short curSelectedIndex = 0; /* selected segment in date scheduler */ short schedStartHour = 0; /* default start to 12 AM */ short schedEndHour = 24; /* default end to next 12 AM */ @@ -787,6 +789,9 @@ OSErr StartSpooler(void) GetDItem(aDialog, sheetFeederCBoxItem, &index, &H, &box); SetCtlValue((ControlHandle)H,defaultSheetFeeder); HiliteControl((ControlHandle)H,(defaultPrinterItem==iconLWItem)?255:0); + GetDItem(aDialog, iw1ModeCBoxItem, &index, &H, &box); + SetCtlValue((ControlHandle)H,defaultIW1Mode); + HiliteControl((ControlHandle)H,(defaultPrinterItem==iconLWItem)?255:0); GetDItem(aDialog, printingEnabledItem, &index, &H, &box); SetCtlValue((ControlHandle)H,defaultPrintEnabled); @@ -824,6 +829,9 @@ OSErr StartSpooler(void) HiliteControl((ControlHandle)H,(item==iconLWItem)?255:0); GetDItem(aDialog, sheetFeederCBoxItem, &tmpItem, &H, &box); HiliteControl((ControlHandle)H,(item==iconLWItem)?255:0); + GetDItem(aDialog, iw1ModeCBoxItem, &tmpItem, &H, &box); + HiliteControl((ControlHandle)H,(item!=iconIWItem)?255:0); + if (item!=iconIWItem) { SetCtlValue((ControlHandle)H,0); } } else if (item >= modemPortItem && item <= printerPortItem) { short tmpItem; @@ -853,19 +861,22 @@ OSErr StartSpooler(void) } if (item == okItem) { short tmpItem; - Boolean hasColorRibbon, hasSheetFeeder, printEnabled; + Boolean hasColorRibbon, hasSheetFeeder, iw1Mode, printEnabled; GetDItem(aDialog, spoolerNameItem, &tmpItem, &H, &box); GetIText(H, nameStr); GetDItem(aDialog, colorRibbonCBoxItem, &tmpItem, &H, &box); hasColorRibbon = (GetCtlValue((ControlHandle)H) != 0); GetDItem(aDialog, sheetFeederCBoxItem, &tmpItem, &H, &box); hasSheetFeeder = (GetCtlValue((ControlHandle)H) != 0); + GetDItem(aDialog, iw1ModeCBoxItem, &tmpItem, &H, &box); + iw1Mode = (GetCtlValue((ControlHandle)H) != 0); GetDItem(aDialog, printingEnabledItem, &tmpItem, &H, &box); printEnabled = (GetCtlValue((ControlHandle)H) != 0); - SetPrinterOptions(hasColorRibbon, hasSheetFeeder); + SetPrinterOptions(hasColorRibbon, hasSheetFeeder,iw1Mode); defaultColorRibbon = hasColorRibbon; defaultSheetFeeder = hasSheetFeeder; defaultPrintEnabled = printEnabled; + defaultIW1Mode = iw1Mode; } curSelectedIndex = 0; ReleaseResource((Handle)arrowsPictHdl); @@ -927,7 +938,7 @@ void DoAbout() Message(0,"\pSimple Spooler is a basic print spooler application."); Message(0,"\pIt presents itself as an AppleTalk printer and will"); Message(0,"\prespond to Printer Access Protocol (PAP) messages."); - Message(0,"\pCopyright © 2026 Ken McLeod."); + Message(0,"\pVersion 0.2, Copyright © 2026 Ken McLeod."); Message(0,sepStr); } @@ -939,6 +950,7 @@ void DoStatus() MessageWithQuotedString(0,"\pPrinter type:",ourType); MessageWithIntValue(0,"\pColor ribbon:",(defaultColorRibbon)?1:0); MessageWithIntValue(0,"\pSheet feeder:",(defaultSheetFeeder)?1:0); + MessageWithIntValue(0,"\pImageWriter 1 mode:",(defaultIW1Mode)?1:0); MessageWithQuotedString(0,"\pPrint to port:",ourPort); MessageWithIntValue(0,"\pPrinting enabled:",(defaultPrintEnabled)?1:0); MessageWithIntValue(0,"\pScheduled start hour:",schedStartHour); @@ -964,7 +976,7 @@ void LoadPreferences() defaultColorRibbon = *((char*)&prefData[8]); defaultSheetFeeder = *((char*)&prefData[9]); defaultPrintEnabled = *((char*)&prefData[10]); - /* reserved char at prefsData[11] */ + defaultIW1Mode = *((char*)&prefData[11]); schedStartHour = *((char*)&prefData[12]); schedEndHour = *((char*)&prefData[13]); /* window rect in global coordinates */ @@ -982,7 +994,7 @@ void LoadPreferences() void SavePreferences() { char *p, val; - Boolean hasColorRibbon, hasSheetFeeder, printEnabled; + Boolean hasColorRibbon, hasSheetFeeder, iw1Mode, printEnabled; long length = 4L+2L+8+18+ourName[0]+1+ourType[0]+1+ourPort[0]+1; Ptr prefData = NewPtrClear(length); if (!prefData) { return; } @@ -999,12 +1011,14 @@ void SavePreferences() val = (ourPort[1] == 'M') ? modemPortItem : printerPortItem; *((char*)&prefData[7]) = val; /* offset 8, 9: boolean values of Color Ribbon and Sheet Feeder */ - GetPrinterOptions(&hasColorRibbon,&hasSheetFeeder); + GetPrinterOptions(&hasColorRibbon,&hasSheetFeeder,&iw1Mode); *((char*)&prefData[8]) = (hasColorRibbon) ? -1 : 0; *((char*)&prefData[9]) = (hasSheetFeeder) ? -1 : 0; - /* offset 10, 11: boolean values of Print Enabled and TBD */ + /* offset 10, 11: boolean values of Print Enabled and IW1 Mode */ printEnabled = defaultPrintEnabled; *((char*)&prefData[10]) = (printEnabled) ? -1 : 0; + iw1Mode = defaultIW1Mode; + *((char*)&prefData[11]) = (iw1Mode) ? -1 : 0; /* offset 12: scheduled start hour for printing (1 byte) */ *((char*)&prefData[12]) = (char)(schedStartHour & 0xFF); /* offset 13: scheduled end hour for printing (1 byte) */ --- Spooler.r Mon Feb 16 20:10:16 2026 +++ Spooler.r Sun Feb 22 23:55:14 2026 @@ -7,7 +7,7 @@ #include "Types.r" #include "SysTypes.r" -#define VERSION_STR "0.1" +#define VERSION_STR "0.2" /* resource type declarations */ type 'spoo' as 'STR '; @@ -68,7 +68,7 @@ resource 'DLOG' (128, "Printer Setup") { }; resource 'DITL' (128) { - { /* array DITLarray: 18 elements */ + { /* array DITLarray: 19 elements */ /* [1] */ {191, 344, 211, 410}, Button { @@ -154,26 +154,32 @@ resource 'DITL' (128) { "Sheet Feeder" }, /* [15] */ + {171, 88, 189, 245}, + CheckBox { + enabled, + "ImageWriter 1 mode" + }, + /* [16] */ {133, 276, 151, 358}, CheckBox { enabled, "Enabled" }, - /* [16] */ + /* [17] */ {153, 292, 171, 402}, UserItem { enabled }, - /* [17] */ - {68, 78, 178, 253}, + /* [18] */ + {68, 78, 211, 253}, UserItem { disabled }, - /* [18] */ - {68, 266, 178, 411}, + /* [19] */ + {68, 266, 178, 410}, UserItem { disabled - }, + } } };