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Add new machine GRiD GRiDcase 1520

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AT/286 based early (1988) laptop with indestructible magnesium case.

Also add emulation of 3 specific Conner HDDs as required by stock 1520 BIOS.
It only works with these particular drives and requires them to be somewhat
slow or reads will hang. The alternative is to use RomBuster to patch your
BIOS.

The machine had 3 display options (640x480 plasma or 2 different LCDs).
For now we need to use stock CGA with mono amber monitor to get some of
the plasma feel. Next step is to add Yamaha V6366 video card support.
This commit is contained in:
technomancer
2024-08-17 18:02:29 -07:00
parent 3c550f3afb
commit 5bfbc8352d
7 changed files with 420 additions and 2 deletions
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7
src/disk/hdd.c
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@@ -415,7 +415,10 @@ static hdd_preset_t hdd_speed_presets[] = {
{ .name = "[1997] 5400 RPM", .internal_name = "1997_5400rpm", .zones = 16, .avg_spt = 185, .heads = 6, .rpm = 5400, .full_stroke_ms = 20, .track_seek_ms = 2.5, .rcache_num_seg = 8, .rcache_seg_size = 64, .max_multiple = 32 },
{ .name = "[1998] 5400 RPM", .internal_name = "1998_5400rpm", .zones = 16, .avg_spt = 300, .heads = 8, .rpm = 5400, .full_stroke_ms = 20, .track_seek_ms = 2, .rcache_num_seg = 8, .rcache_seg_size = 128, .max_multiple = 32 },
{ .name = "[2000] 7200 RPM", .internal_name = "2000_7200rpm", .zones = 16, .avg_spt = 350, .heads = 6, .rpm = 7200, .full_stroke_ms = 15, .track_seek_ms = 2, .rcache_num_seg = 16, .rcache_seg_size = 128, .max_multiple = 32 },
// clang-format on
{ .name = "Conner CP3024", .internal_name = "CP3024", .model = "Conner Peripherals 20MB - CP3024", .zones = 1, .avg_spt = 33, .heads = 2, .rpm = 3500, .full_stroke_ms = 50, .track_seek_ms = 8, .rcache_num_seg = 1, .rcache_seg_size = 8, .max_multiple = 8 },
{ .name = "Conner CP3044", .internal_name = "CP3044", .model = "Conner Peripherals 40MB - CP3044", .zones = 1, .avg_spt = 40, .heads = 2, .rpm = 3500, .full_stroke_ms = 50, .track_seek_ms = 8, .rcache_num_seg = 1, .rcache_seg_size = 8, .max_multiple = 8 },
{ .name = "Conner CP3104", .internal_name = "CP3104", .model = "Conner Peripherals 104MB - CP3104", .zones = 1, .avg_spt = 33, .heads = 8, .rpm = 3500, .full_stroke_ms = 45, .track_seek_ms = 8, .rcache_num_seg = 4, .rcache_seg_size = 8, .max_multiple = 8 },
// clang-format on
};
int
@@ -472,6 +475,8 @@ hdd_preset_apply(int hdd_id)
hd->cache.num_segments = preset->rcache_num_seg;
hd->cache.segment_size = preset->rcache_seg_size;
hd->max_multiple_block = preset->max_multiple;
if (preset->model)
hd->model = preset->model;
if (!hd->speed_preset)
return;