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C16: fix incorrect use of registers in prg loader

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This commit is contained in:
Gyorgy Szombathelyi
2018-09-01 19:45:38 +02:00
parent ce53fa7849
commit c735e83de1
1 changed files with 8 additions and 8 deletions
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16
cores/c16/c16_mist.v
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@@ -310,7 +310,7 @@ data_io data_io (
reg [15:0] reg_2d;
reg [15:0] reg_2f;
reg [15:0] reg_31;
reg [15:0] reg_ae;
reg [15:0] reg_9d;
wire zp_2d_sel = c16_sdram_addr == 16'h002d;
wire zp_2e_sel = c16_sdram_addr == 16'h002e;
@@ -318,12 +318,12 @@ wire zp_2f_sel = c16_sdram_addr == 16'h002f;
wire zp_30_sel = c16_sdram_addr == 16'h0030;
wire zp_31_sel = c16_sdram_addr == 16'h0031;
wire zp_32_sel = c16_sdram_addr == 16'h0032;
wire zp_ae_sel = c16_sdram_addr == 16'h00ae;
wire zp_af_sel = c16_sdram_addr == 16'h00af;
wire zp_9d_sel = c16_sdram_addr == 16'h009d;
wire zp_9e_sel = c16_sdram_addr == 16'h009e;
wire zp_overwrite =
zp_2d_sel || zp_2e_sel || zp_2f_sel || zp_30_sel ||
zp_31_sel || zp_32_sel || zp_ae_sel || zp_af_sel;
zp_31_sel || zp_32_sel || zp_9d_sel || zp_9e_sel;
reg zp_cas_delay, zp_sel;
reg zp_dl_delay, zp_dl;
@@ -343,7 +343,7 @@ always @(posedge clk28) begin
reg_2d <= ioctl_sdram_addr + 16'd1;
reg_2f <= ioctl_sdram_addr + 16'd1;
reg_31 <= ioctl_sdram_addr + 16'd1;
reg_ae <= ioctl_sdram_addr + 16'd1;
reg_9d <= ioctl_sdram_addr + 16'd1;
end else if(zp_sel && !c16_rw) begin
// cpu writes registers
if(zp_2d_sel) reg_2d[ 7:0] <= c16_dout;
@@ -352,8 +352,8 @@ always @(posedge clk28) begin
if(zp_30_sel) reg_2f[15:8] <= c16_dout;
if(zp_31_sel) reg_31[ 7:0] <= c16_dout;
if(zp_32_sel) reg_31[15:8] <= c16_dout;
if(zp_ae_sel) reg_ae[ 7:0] <= c16_dout;
if(zp_af_sel) reg_ae[15:8] <= c16_dout;
if(zp_9d_sel) reg_9d[ 7:0] <= c16_dout;
if(zp_9e_sel) reg_9d[15:8] <= c16_dout;
end
end
@@ -361,7 +361,7 @@ wire [7:0] zp_ovl_dout =
zp_2d_sel?reg_2d[7:0]:zp_2e_sel?reg_2d[15:8]:
zp_2f_sel?reg_2f[7:0]:zp_30_sel?reg_2f[15:8]:
zp_31_sel?reg_31[7:0]:zp_32_sel?reg_31[15:8]:
zp_ae_sel?reg_ae[7:0]:zp_af_sel?reg_ae[15:8]:
zp_9d_sel?reg_9d[7:0]:zp_9e_sel?reg_9d[15:8]:
8'hff;
// the address taken from the first to bytes of a prg file tell