Reorganise and rename the CGA files. Move onboard video to the video folder. Rename "con" to "cursorvisible" across the entire emulator

src/include/86box/m_tandy.h

@@ -0,0 +1,95 @@
+/*
+ * 86Box    A hypervisor and IBM PC system emulator that specializes in
+ *          running old operating systems and software designed for IBM
+ *          PC systems and compatibles from 1981 through fairly recent
+ *          system designs based on the PCI bus.
+ *
+ *          This file is part of the 86Box distribution.
+ *
+ *          Header files for the Tandy keyboard and video subsystems.
+ *
+ *
+ *
+ * Authors: Connor Hyde, <mario64crashed@gmail.com>
+ *
+ *          Copyright 2025 starfrost
+ */
+
+typedef struct t1kvid_t {
+    mem_mapping_t mapping;
+    mem_mapping_t vram_mapping;
+
+    uint8_t crtc[32];
+    int     crtcreg;
+
+    int     array_index;
+    uint8_t array[256];
+    int     memctrl;
+    uint8_t mode;
+    uint8_t col;
+    uint8_t stat;
+
+    uint8_t *vram;
+    uint8_t *b8000;
+    uint32_t b8000_mask;
+    uint32_t b8000_limit;
+    uint8_t  planar_ctrl;
+    uint8_t  lp_strobe;
+
+    int      linepos;
+    int      displine;
+    int      sc;
+    int      vc;
+    int      dispon;
+    int      cursorvisible;
+    int      cursoron;
+    int      blink;
+    int      fullchange;
+    int      vsynctime;
+    int      vadj;
+    uint16_t ma;
+    uint16_t maback;
+
+    uint64_t   dispontime;
+    uint64_t   dispofftime;
+    pc_timer_t timer;
+    int        firstline;
+    int        lastline;
+
+    int composite;
+} t1kvid_t;
+
+typedef struct t1keep_t {
+    char *path;
+
+    int      state;
+    int      count;
+    int      addr;
+    int      clk;
+    uint16_t data;
+    uint16_t store[64];
+} t1keep_t;
+
+typedef struct tandy_t {
+    mem_mapping_t ram_mapping;
+    mem_mapping_t rom_mapping; /* SL2 */
+
+    uint8_t *rom; /* SL2 */
+    uint8_t  ram_bank;
+    uint8_t  rom_bank;   /* SL2 */
+    int      rom_offset; /* SL2 */
+
+    uint32_t base;
+    uint32_t mask;
+    int      is_hx;
+    int      is_sl2;
+
+    t1kvid_t *vid;
+} tandy_t;
+
+void tandy_vid_init(tandy_t* dev);
+uint8_t tandy_vid_in(uint16_t addr, void* priv);
+void tandy_vid_out(uint16_t addr, uint8_t val, void *priv);
+
+void tandy_vid_close(void* priv);
+void tandy_recalc_address_sl(tandy_t* dev); //this function is needed by both m_ and vid_tandy.c