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https://github.com/bobbimanners/emailler.git
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EDIT: Now checked that RamWorks banks actually exist before using them!
This commit is contained in:
Bobbi Webber-Manners
parent
201ad856d3
commit
4f229c5103
91
apps/edit.c
91
apps/edit.c
@ -1,9 +1,10 @@
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/////////////////////////////////////////////////////////////////////////////
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// Simple text editor
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// Supports Apple //e Auxiliary memory and RamWorks style expansions
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// Bobbi July-Aug 2020
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/////////////////////////////////////////////////////////////////////////////
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// TODO: Support for RamWorks ... multiple buffers
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// TODO: Cut/Copy/Paste ... within and between buffers
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// TODO: Search options - ignore case, complete word.
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// Note: Use my fork of cc65 to get a flashing cursor!!
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@ -35,7 +36,9 @@
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#ifdef AUXMEM
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#define BUFSZ 0xb7fe // All of aux from 0x800 to 0xbfff, minus a byte
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char iobuf[IOSZ]; // Buffer for disk I/O
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uint8_t auxbank; // Currently selected aux bank
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uint8_t banktbl[1+8*16]; // Handles up to 8MB. Map of banks.
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uint8_t auxbank; // Currently selected aux bank (physical)
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uint8_t l_auxbank; // Currently selected aux bank (logical)
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#else
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#define BUFSZ (20480 - 1024) // 19KB
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char gapbuf[BUFSZ];
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@ -429,7 +432,7 @@ void update_status_line(void) {
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switch (mode) {
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case SEL_NONE:
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cprintf("OA-? Help | [%03u] %c File:%s %2uKB free",
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auxbank, modified ? '*' : ' ', filename, (FREESPACE() + 512) / 1024);
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l_auxbank, modified ? '*' : ' ', filename, (FREESPACE() + 512) / 1024);
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l = 44 - strlen(filename);
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break;
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case SEL_DEL:
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@ -462,7 +465,7 @@ void update_status_line(void) {
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break;
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case SRCH3:
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cprintf("OA-? Help | [%03u] %c File:%s %2uKB free | Not Found",
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auxbank, modified ? '*' : ' ', filename, (FREESPACE() + 512) / 1024);
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l_auxbank, modified ? '*' : ' ', filename, (FREESPACE() + 512) / 1024);
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l = 44 - 12 - strlen(filename);
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break;
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}
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@ -655,11 +658,9 @@ void jump_pos(uint16_t pos) {
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/*
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* Go to next tabstop
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*/
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#pragma code-name (push, "LC")
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uint8_t next_tabstop(uint8_t col) {
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return (col / 8) * 8 + 8;
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}
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#pragma code-name (pop)
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/*
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* Load a file from disk into the gapbuf
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@ -1237,22 +1238,18 @@ uint8_t cursor_down(void) {
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/*
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* Goto beginning of line
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*/
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#pragma code-name (push, "LC")
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void goto_bol(void) {
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while (curscol > 0)
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cursor_left();
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}
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#pragma code-name (pop)
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/*
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* Goto end of line
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*/
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#pragma code-name (push, "LC")
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void goto_eol(void) {
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while (curscol < rowlen[cursrow] - 1)
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cursor_right();
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}
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#pragma code-name (pop)
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/*
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* Word left
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@ -1529,18 +1526,81 @@ void copyaux(char *src, char *dst, uint16_t len, uint8_t dir) {
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}
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#endif
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/*
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* Available aux banks. Taken from RamWorks III Manual p47
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*/
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void avail_aux_banks(void) {
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__asm__("sta $c009"); // Store in ALTZP
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__asm__("ldy #$7f"); // Maximum valid bank
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findbanks:
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__asm__("sty $c073"); // Select bank
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__asm__("sty $00"); // Store bank num in ALTZP
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__asm__("tya");
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__asm__("eor #$ff");
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__asm__("sta $01"); // Store the inverse in ALTZP too
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__asm__("dey");
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__asm__("bpl %g", findbanks);
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// Read back the bytes we wrote to find valid banks
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__asm__("lda #$00");
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__asm__("tay");
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__asm__("tax");
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findthem:
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__asm__("sty $c073"); // Select bank
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__asm__("sta $c076"); // Why?
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__asm__("cpy $00");
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__asm__("bne %g", notone);
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__asm__("tya");
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__asm__("eor #$ff");
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__asm__("cmp $01");
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__asm__("bne %g", notone);
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__asm__("inx");
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__asm__("tya");
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__asm__("sta %v,x", banktbl);
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__asm__("cpx #128"); // 8MB max
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__asm__("bcs %g", done);
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notone:
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__asm__("iny");
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__asm__("bpl %g", findthem);
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done:
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__asm__("lda #$00");
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__asm__("sta $c073"); // Back to aux bank 0
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__asm__("sta $c008"); // Turn off ALTZP
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__asm__("stx %v", banktbl); // Number of banks
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__asm__("lda #$ff");
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__asm__("inx");
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__asm__("sta %v,x", banktbl); // Terminator
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}
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/*
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* Translate logic aux bank number to physical.
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* This is necessary because there may be 'holes' in the banks
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* Logical banks are numbered 1..maxbank contiguously.
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* Physical banks start at 0 and may be non-contiguous.
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*/
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uint8_t bank_log_to_phys(uint8_t l) {
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uint8_t i;
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for (i = 1; i < 1+8*16; ++i)
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if (banktbl[i] == l - 1)
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return i - 1;
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show_error("Bad bank"); // Should never happen
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}
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/*
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* Initialize the data at 0x200 in each aux bank so that all buffers
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* are empty, unmodified and without a filename
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*/
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void init_aux_banks(void) {
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for (auxbank = 0; auxbank < 128; ++auxbank) {
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uint8_t i;
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cprintf("%u 64KB aux banks -> %uKB\n", banktbl[0], banktbl[0]*64);
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for (i = 1; i < banktbl[0]; ++i) {
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auxbank = bank_log_to_phys(i);
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// Saves filename[], gapbegin, gapend and modified (85 bytes)
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__asm__("lda %v", auxbank);
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__asm__("sta $c073"); // Set aux bank
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copyaux(filename, (void*)0x0200, 85, TOAUX);
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}
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auxbank = 0;
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l_auxbank = 1;
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__asm__("lda #$00");
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__asm__("sta $c073"); // Set aux bank back to 0
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}
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@ -1553,22 +1613,24 @@ void init_aux_banks(void) {
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#pragma code-name (push, "LC")
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void change_aux_bank(void) {
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int16_t i;
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if (prompt_for_name("Bank #", 0) == 255)
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sprintf(userentry, "Buffer # (1-%u)", banktbl[0]);
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if (prompt_for_name(userentry, 0) == 255)
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return;
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if (strlen(userentry) == 0)
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return;
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i = atoi(userentry);
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if ((i < 0) || (i > 127)) { // TODO: Detect how many banks
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if ((i < 1) || (i >= banktbl[0])) {
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beep();
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return;
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}
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l_auxbank = i;
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// Saves filename[], gapbegin, gapend and modified (85 bytes)
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__asm__("lda %v", auxbank);
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__asm__("sta $c073"); // Set aux bank
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copyaux(filename, (void*)0x0200, 85, TOAUX);
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// Load new filename[], gapbegin, gapend and modified (85 bytes)
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auxbank = i;
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auxbank = bank_log_to_phys(l_auxbank);
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__asm__("lda %v", auxbank);
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__asm__("sta $c073"); // Set aux bank
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copyaux((void*)0x0200, filename, 85, FROMAUX);
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@ -1932,6 +1994,7 @@ void main(int argc, char *argv[]) {
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#ifdef AUXMEM
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char *pad = (char*)0xbfff;
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*pad = '\0'; // Null termination for strstr()
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avail_aux_banks();
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init_aux_banks();
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#endif
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if (argc == 2) {
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