KC85/2: Debug UI for Z80 chips (CPU, PIO, CTC)

.gitignore

@@ -1,3 +1,4 @@
 zig-*/
 .zig-*/
 .vscode/
+.cursor

build.zig

@@ -12,9 +12,18 @@ pub fn build(b: *Build) !void {
     const dep_sokol = b.dependency("sokol", .{
         .target = target,
         .optimize = optimize,
+        .with_sokol_imgui = true,
     });
+    const dep_cimgui = b.dependency("cimgui", .{
+        .target = target,
+        .optimize = optimize,
+    });
+
+    // inject the cimgui header search path into the sokol C library compile step
+    dep_sokol.artifact("sokol_clib").addIncludePath(dep_cimgui.path("src"));
     const dep_shdc = dep_sokol.builder.dependency("shdc", .{});
     const mod_sokol = dep_sokol.module("sokol");
+    const mod_cimgui = dep_cimgui.module("cimgui");
 
     // shader module
     const mod_shaders = try sokol.shdc.createModule(b, "shaders", mod_sokol, .{
@@ -58,10 +67,22 @@ pub fn build(b: *Build) !void {
         .optimize = optimize,
         .imports = &.{
             .{ .name = "sokol", .module = dep_sokol.module("sokol") },
+            .{ .name = "cimgui", .module = dep_cimgui.module("cimgui") },
             .{ .name = "common", .module = mod_common },
             .{ .name = "shaders", .module = mod_shaders },
         },
     });
+    const mod_ui = b.addModule("ui", .{
+        .root_source_file = b.path("src/ui/ui.zig"),
+        .target = target,
+        .optimize = optimize,
+        .imports = &.{
+            .{ .name = "sokol", .module = dep_sokol.module("sokol") },
+            .{ .name = "cimgui", .module = dep_cimgui.module("cimgui") },
+            .{ .name = "common", .module = mod_common },
+            .{ .name = "chips", .module = mod_chips },
+        },
+    });
 
     // top-level modules
     const mod_chipz = b.addModule("chipz", .{
@@ -73,6 +94,7 @@ pub fn build(b: *Build) !void {
             .{ .name = "chips", .module = mod_chips },
             .{ .name = "systems", .module = mod_systems },
             .{ .name = "host", .module = mod_host },
+            .{ .name = "ui", .module = mod_ui },
         },
     });
 
@@ -94,5 +116,6 @@ pub fn build(b: *Build) !void {
         .optimize = optimize,
         .mod_chipz = mod_chipz,
         .mod_sokol = mod_sokol,
+        .mod_cimgui = mod_cimgui,
     });
 }

build.zig.zon

@@ -4,8 +4,12 @@
     .fingerprint = 0x3ecb34175baf6f81,
     .dependencies = .{
         .sokol = .{
-            .url = "git+https://github.com/floooh/sokol-zig.git#59c7eb03b59ff0936bbdf21ae5f7b2df51e5a50a",
-            .hash = "sokol-0.1.0-pb1HK4jQLQD-hG8KuP-i7qkA5RY5pVfL7hLg56FlckV0",
+            .url = "git+https://github.com/floooh/sokol-zig.git#1d6a902f007fc32501ef26676f7cb73dcd81b047",
+            .hash = "sokol-0.1.0-pb1HK_ZPLgC-2uMA63u1iiB2BqPcibWOEZVH0Hz1ursz",
+        },
+        .cimgui = .{
+            .url = "git+https://github.com/floooh/dcimgui.git#581c2e909c899c21923c779d4c41ea56ab93bbb4",
+            .hash = "cimgui-0.1.0-44ClkQ14kwAiwcr3ioDjxvPuiWQctWrt-tIFtsfP6xmU",
         },
     },
     .paths = .{

emus/build.zig

@@ -31,6 +31,7 @@ pub const Options = struct {
     optimize: OptimizeMode,
     mod_chipz: *Build.Module,
     mod_sokol: *Build.Module,
+    mod_cimgui: *Build.Module,
 };
 
 pub fn build(b: *Build, opts: Options) void {
@@ -43,6 +44,7 @@ pub fn build(b: *Build, opts: Options) void {
             .optimize = opts.optimize,
             .mod_chipz = opts.mod_chipz,
             .mod_sokol = opts.mod_sokol,
+            .mod_cimgui = opts.mod_cimgui,
         });
     }
 }
@@ -55,6 +57,7 @@ const EmuOptions = struct {
     optimize: OptimizeMode,
     mod_chipz: *Build.Module,
     mod_sokol: *Build.Module,
+    mod_cimgui: *Build.Module,
 };
 
 fn addEmulator(b: *Build, opts: EmuOptions) void {
@@ -65,6 +68,7 @@ fn addEmulator(b: *Build, opts: EmuOptions) void {
         .imports = &.{
             .{ .name = "chipz", .module = opts.mod_chipz },
             .{ .name = "sokol", .module = opts.mod_sokol },
+            .{ .name = "cimgui", .module = opts.mod_cimgui },
         },
     });
     if (opts.model != .NONE) {