claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions 3 Packages Projects Releases Wiki Activity

ATI Mach8/32 mode changes and cleanup:

Browse Source 
1. Cleanups and moving the mach8/32 struct to a dedicated header so that would allow for future 8514/A add-on clones (in paper).
2. Mach8/32's port 0x4ae8/9 and shadow set ports (0x5aee and 0x46ee) now account to the mode changes seriously, should fix most of the horizontal/vertical coordinates while entering GUI modes of various stuff.
3. Horizontal/Vertical window coordinates can only be modified if the display enable bit of port 0x22e8 is set as well as bit 0 of port 0x4aee, fixes most problems noted above.
4. Implemented horizontal blanking stuff a la VGA but actually for 8514/A and clones (like ATI).
5. Added some comments regarding the current situation.
6. The Mach8 was actually a 8514/A clone co-processor, not a single solution card of its own. The ATI Graphics Ultra was a single solution card that is actually a Mach8 + ATI 28800-6 in one, so renaming it accordingly.
7. Fixed garbled/distorted acceleration when device bitmap acceleration is enabled in the ATI Mach8 3.0 Win3.1 drivers.
This commit is contained in:
TC1995
2024-01-15 21:43:33 +01:00
parent 481b8c8b22
commit d17d13e3b8
8 changed files with 1075 additions and 657 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
src/include/86box/vid_8514a.h
View File

@@ -33,6 +33,8 @@ typedef struct hwcursor8514_t {
} hwcursor8514_t;
typedef struct ibm8514_t {
rom_t bios_rom;
rom_t bios_rom2;
hwcursor8514_t hwcursor;
hwcursor8514_t hwcursor_latch;
uint8_t pos_regs[8];
@@ -60,12 +62,12 @@ typedef struct ibm8514_t {
int dac_b;
int internal_pitch;
int hwcursor_on;
int modechange;
struct {
uint16_t subsys_cntl;
uint16_t setup_md;
uint16_t advfunc_cntl;
uint8_t ext_advfunc_cntl;
uint16_t cur_y;
uint16_t cur_x;
int16_t destx;
@@ -142,14 +144,21 @@ typedef struct ibm8514_t {
uint16_t test;
int vendor_mode[2];
int h_blankstart;
int h_blank_end_val;
int hblankstart;
int hblank_end_val;
int hblankend;
int hblank_ext;
int hblank_sub;
int v_total;
int dispend;
int v_syncstart;
int split;
int h_disp;
int h_disp_old;
int h_total;
int h_sync_width;
int h_disp_time;
int rowoffset;
int dispon;
@@ -176,20 +185,17 @@ typedef struct ibm8514_t {
uint8_t data_available;
uint8_t data_available2;
uint8_t scanmodulos;
uint8_t rowcount;
int hsync_start;
int hsync_width;
int htotal;
int hdisp;
int vtadj;
int vdadj;
int vsadj;
int hdisped;
int sc;
int vtb;
int vdb;
int vsb;
int vsyncstart;
int vsyncwidth;
int vtotal;
int v_disp;
int vdisp;
int disp_cntl;
int interlace;
@@ -205,6 +211,7 @@ typedef struct ibm8514_t {
int pitch;
int ext_pitch;
int ext_crt_pitch;
int extensions;
} ibm8514_t;
#endif /*VIDEO_8514A_H*/